Reading Comprehension - Passage: "Global Warming"

Contributed by:
Ivan
This passage highlights the seriousness of global warming and how human activities contribute to it significantly. Global warming is the long-term heating of Earth's climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere.

1. WHAT IS GLOBAL WARM
© K. Landry
2. How di Is
e Thi
What Can | Do?
Choose from.one of
these options!

Endangered Species

What Causes Glob
al Warming?




Climates at Risk
Go here for a list of references used.
3. How Do | Use This?
In order to navigate through this PowerPoint, all you need to do is use your mouse.
When you see a word with an underline, you can click on it. When you click, it will take you to
a new page, a website, or a movie. Many of the pictures are linked to different places also.
Basically, whenever the mouse arrow turns into a hand, that means that you can click,on it
and it will take you somewhere else.
At the bottom of each screen you will see a variety of words, each underlined: ‘Home’ takes
you to the menu of different choices, the second page you encountered when you opened
this product. ‘Back’ takes you to the page you previously visited. Do not use your backspace
key, because it will not take you to the slide you were previously on. Additionally, there are
other places you can get to at the bottom of the page that relate to the topic. For example, on
the Water Pollution page, you can also access Air Pollution and Soil Contamination, two other
kinds of pollution.
If you feel like you have gotten lost, try the Back button or Home. This way you can go to the
slide you were just at, or start over.
Home Back
4. What Causes Global Warming?
Insensitivity to the Environment
Humans have not been taking care of the environment. Two major factors contributing to
global warming are Pollution and Clear Cutting. Both of these factors are problematic
because of the way we treat our world.
Greenhouse Gases
Greenhouse gases are the main cause of global warming. They contribute to what is known
as the Greenhouse Effect, which traps heat and keeps the earth warm.
Watch a video on Global Warming
Home Back
5.
Carbon Dioxide
| Oxide


6. Carbon dioxide is always present.in the atmosphere. It is a
product of plant and animal respiration (breathing),
decaying organic matter, fermentation, forest/grass fires
and oceans. Like the other greenhouse gases, carbon
dioxide traps heat to contribute to global warming. Humans
increase the amount of carbon dioxide through
deforestation, the burning of fossil fuels, and industrial
The carbon cycle is important to global warming. As we
increase the amount of carbon dioxide in the atmosphere,
we potentially disrupt the carbon cycle. Check out this link
for an animation on how the carbon cycle works.
Home Back Methane Nitrous Oxide Greenhouse Gases
7. Methane (CH,)
Methane is a naturally occurring gas and the earth's
crust contains large amounts of it. Methane is produced
from many different sources, including livestock, biomass
burning, landfills and coal mining. Since’ the 1700s;
human activities have increased the amount of methane
in the atmosphere by about 150%. Methane is the main
component in natural gas, which is a fossil fuel.

Home Back Carbon Dioxide Nitrous Oxide Greenhouse Gases
8. Nitrous Oxide (N,0)
Like the other two greenhouse gases, nitrous oxide is a
naturally occurring gas and is required in the
atmosphere. Nitrous oxide is produced primarily from
soil and water denitrification. When nitrous oxide is
produced in this manor, plants absorb it. Approximately
one third of atmospheric nitrous oxide is produced by
humans. It comes mainly from nitrogenous fertilizers
and the burning of fossil fuels.

Home Back Carbon Dioxide Methane Greenhouse Gases
9. Pollution is a huge problem in the world. It takes many forms, and each type of pollution is
extremely harmful to the environment and negatively affects the climates.
There are three main types of pollution that affect the earth and increase global warming.
They are: Air Pollution, Water,Pollution and Soil Contamination

Air Pollution Soil Contamination

Water Pollution
Home Back Insensitivity to the Environment What Causes Global Warming?
10.
a air contaminants (CAC), persistent
POPs), heavy metals (HMs), and


CACs Smog POPs These
and acid rain are results of CACs. The pollutants can last in the environment for
_ pollutants inthis group include Sulphur =—\very long periods of time, and caneasily
Oxi SO.) Ni Oxi 0 ‘ They i
Particulate Matter (PM), Volatile Organic industrial chemicals (PCBs), pesticides
Compounds (VOC), Carbon Monoxide and unintentional contaminants and by-


(CO) and Ammonia (NH,). products (i.e. dioxins and furans)
HMs HMs Toxins
i CACs, POPs and HMs are all included in
lead. These metals are easily toxins, but this category also includes
transported through air and enter the more pollutants. They are toxic and/or
_-waterandfoodsupply. == === poisonous toourhealthandtothe = = =
F Cli for alist of toxi
| Home Back Pollution Water Pollution Soil Contamination Insensitivity to the Environme

11.
through a mixture of components, but ground-
level ozone is the main component. Ground-level
‘ozone is created when nitrogen oxides and
volatile organic compounds interact in the
presence of sunlight. Smog negatively affects-our
health and the health of plants and animals.
Smog creates a hazy atmosphere and is difficult
__ to see through. Ol



12. Like water pollution, soil contamination is caused by
human activity. Contamination results from either liquid
or solid hazardous substances which have been spilled
or buried into the soil. It can also result from air pollution.
When particles are released into the air, they deposit
themselves into the soil when they land. Water pollution
also plays a role in soil contamination. Soil naturally
soaks up water, and when the water is polluted, the soil
that absorbs it also becomes polluted.


When soil is contaminated, it negatively affects all organisms that come in contact with it.
Plants can absorb the contamination through their roots, which may cause them to die, or at
the very least, spread the contamination to the animal that eats it. Animals also come into
contact with contaminated soil when they dig or play it in. The contamination may absorb into
their skin, harming their health.
Home Back Pollution Air Pollution Water Pollution
Insensitivity to the Environment
13. Water Pollution
Water pollution can be divided into two groups,
point source, and non-point source.

Point Source Non-point Source Non-
Point source contamination occurs when point source contamination occurs when
pollutants are emitted directly into a body of pollutants are indirectly put into the water
water. Oil spills, landfills and leaking gas system. Fertilizer run-off is an example of non-
storage tanks are examples of point source point source contamination) The majority of
contamination. water pollution comes from non-point source
Non-point source contamination is the hardest to control because there is no definite entrance
point. Steps can be taken to ensure that landfills won't leak into the water stream, or gas storage
tanks are leak-proof, but it is much harder to control rain, which is why fertilizers run off farms.
Nutrients such as nitrates and phosphates are major factors in water pollution. They negatively
affect the environment by over-stimulating growth, which means that aquatic life, especially plants
and algae will grow faster. This causes clogs in waterways, excessive use of dissolved oxygen as
they decompose, and it blocks light to deeper waters. The respiration of fish and other organisms in
the water is adversely affected, causing them to die prematurely and be in danger of becoming
endangered. Pathogens are another form of pollution that directly affect the environment. They
cause aquatic life to become ill, sometimes causing death.
Home Back Pollution Air Pollution Soil Contamination Insensitivity to the Environment
14. Clear Cutting (Deforestation)
Clear cutting is the removal of trees from a given
section of a forest. It has devastating effects on
the environment and is a major factor in global
warming. The main way that it contributes to
global warming is that clear cutting increases the
amount of carbon dioxide (CO,yin the air. Trees
take carbon dioxide and convert it into oxygen,
but when there are few trees, this can’t happen,
and carbon dioxide levels increase. Carbon
dioxide is one of the greenhouse gases, and
therefore traps heat, thus contributing to global
Deforestation also affects the immediate environment in which the trees were taken from. The
negative changes in the environment include: removal of the forest canopy (which protects life
on the forest floor); the removal of carbon sinks, which will cause CO2 to build up; a loss of
habitat for underground worms, fungi and bacteria which live in the soil and help keep plants
healthy; and an increase in flash flooding due to the fact that precipitation is no longer trapped
and simply runs off the soil.

To learn about deforestation and the rainforest, go here.
Sometimes the effects of clear cutting can be reduced through Reforestation.
Home Back Insensitivity to the Environment
15. Acid Rain
Acid rain is precipitation that
contains abnormally high levels of
sulfuric and nitric acids. As acid
rain falls, it makes the land and
water it falls into more acidic. For
water, it means that the bodies of
water can no longer support all the
varieties of life that live there. This
may lead to certain species
becoming endangered.
This website from Environment
Canada offers some interesting
visuals, as well as questions and mmm NOx,SOx
answers about acid rain == Acidrain
http://www.ec.gc.ca/acidrain/acidw == Water

Home Back Pollution Air Pollution Insensitivity to the Environment
16. | Fossil Fuels are naturally occurring substances which are created from decaying organic
matter. Overtime, heat and pressure from inside the earth turned the decayed matter into fuel,
which, when bumed creates energy. The three main fossil fuels are coal, oil and natural gas.
Fossil fuels provide about 90% of the world’s energy. We depend on fossil fuels in order to
Operate our cars, provide heatand electricity, etc. Unfortunately, fossil fuels are
nonrenewable, and once they are gone, we can’t get them back. Fossil fuels are always being
created, because organic matter is always decaying, but it takes a lot of time forthe decayed
matter to turn into fossil fuels. This is why renewable energy is important — there will never be
a shortage of renewable energy.

Natural Gas

Home Back Greenhouse Gases
17. Ever since industrialization, we have been abusing the environment to an extent never seen
before. The environment cannot sustain the changes that have been made to it in the last 300
hundred years. We have begun to take the environment for granted, and are causing it
damage that may not be fixable. Two different human practices, pollution and clear cutting are
major contributors to global warming.

Clear Cutting
Home Back What Causes Global Warming?
18. Denitrification: A process occurring in soil where bacteria break down nitrates to produce
nitrogen gas, which is retumed to the atmosphere.
Permafrost: A thick layer of soil/beneath the surface that remains frozen throughout the year
Kinetic Energy: Motion. Anything that moves has motion, and therefore has kinetic energy.
eeu? waterbohaee, = @ = “$e SS

19. Everyone needs to do their part to stop global warming, but there are also some changes
that society as a whole needs to make. Not all the social changes are included here, there
are many more. Here is a website that has a lot of information. If you know more solutions,
try and put them into action in your school, in your community, and let your MP know about
the changes that our government should be making.

Public Transportation

Reforestation Renewable Energy
Home Back What Can | Do?
20.


Renewable Energy is energy which is always
available. Nonrenewable energy comes from
sources which may become depleted, and
therefore we cannot count on those sources
always being there. Renewable energy comes
from water, wind, biomass and sunlight. To
find out more on how Canada uses renewable
energy, go to this website.

Wind Power

Biomass Energy
Home Back Social Changes
Solar Energy

21.
22. Wind Energy
Wind energy converts kinetic energy produced by the
wind into more useful forms of energy. Wind energy is
avery attractive form of energy because it is _pollution-
free and doesn’t produce greenhouse gases or toxic
substances. It is infinitely sustainable-because there is
always wind, and is always giving off kinetic energy.
Wind energy has.been used for thousands of years.
One of the most common uses of wind energy was to
propel boats across bodies of water. Wind catches the
sails, and propels the boat.

Wind Turbines
Wind turbines are currently used to convert the kinetic energy into mechanical energy
or electricity. Wind turbines are best suited to very windy areas. The speed of the wind
is determined by a number of factors, including the local terrain, density of the air,
temperature, etc. Wind speed increase the higher above ground one goes, so turbines
are usually located on tall towers or in high, open areas. To see wind turbines at work,
click here.
Home Back Renewable Energy Bioenergy Water Energy Solar Energy
23.
Biomass energy is produced when the
chemical energy stored in fuels made from
biomass are released. Biomass is a by-
product of solar energy which has been
stored through the photosynthetic activity of
plants. The CO, which the plant removed from
the atmosphere is combined with water to
produce biomass. Different types of wastes ©
which contain biomass are: agricultural waste,
municipal waste, forest waste and food
processing waste. Specific forms of biomass
include wood, straw and manure. Unlike
fossil fuels, which take years to develop,
biomass is always readily available. :
Photosynthesis happens on a regular, daily Cows are a great source of manure
basis, creating biomass.

Create your own biogas generator with Click here to see bioenergy heating a home.
instructions from this website!
Home Back Renewable Energy Water Energy Wind Energy Solar Energy
24. Water Energy (Hydroelectric Energy)
Water energy depends on the kinetic energy of moving
water. As long as there is snow and water to fill rivers,
lakes, streams and oceans, moving water can be a
source of renewable energy. Unfortunately, water
energy can have a negative impact on the environment.
The dams and reservoirs which are built to increase
water energy production can destroy the environment in
which they are placed. The often destroy large areas of
forest and wildlife habitats. The dams can also block the
movement of fish and other organisms, disrupting the
In order to reduce the negative impact that dams and
reservoirs can have on the environment, the builders of
them need to consider all aspects of the environment
and ecosystem, and develop a system which works with
the environment, not against it.

Water energy depends on
moving water
Click here to see an animation of a dam at work.
Home Back Renewable Energy Bioenergy Wind Energy Solar Energy
25. Reforestation (Forest Conservation)
Reforestation is the process of building up areas
which have been subjected to clear cutting.
When forests are cut down, we need to go in
and plant trees in order to allow the forests to re-
grow. Reforestation allows ecosystems the
chance to return to the balance that was
disrupted when the trees in the area were cut
down. Reforestation occasionally occurs on its,
own, but that is not always the case. This is why
society needs to plant trees. Companies who
clear cut areas should replant trees, but that
often is not the case. Fortunately, there are
many opportunities for society to plant trees, and
many organizations have days in which they
plant trees.

There are many programs available in which you can participate in tree-planting. Here is a
website which can provide you with the information you will need if you want to tree-plant.
Home Back Social Changes Renewable Energy Public Transportation
26.


One of the easiest ways to reduce pollution is to take
public transportation. Not only is it cost effective, but it's
a great way to reduce greenhouse gas emissions. If
everyone in the city of Montreal was to take public
transit, walk or bike to work or school, greenhouse gas
emissions produced by cars, trucks and vans would be
vastly reduced. The air would be cleaner, and there
would be fewer smog days.
Every city, not just the major ones, should have an
effective and widely available public transit system.
Many people don't take public transit because they feel
it takes too long, is too dirty, or is a hassle. In order to
increase the use of public transit, cities need to offer
more frequent buses or metros at peak times during the
day. More workers should be hired to keep the transit
areas, buses and metros clean.
The Montreal Metro System
City budget is a problem for a lot of public transportation needs. The city often does not have
enough money to increase the frequency and number of transit vehicles, and may not be able to
afford as many workers as necessary. Governments should be aware of the public's need and
desire for effective public transportation. This means writing letters to your MP and making your
voice heard.
Home Back Social Changes Renewable Energy Reforestation
27. What Can I Do?
We can all help in the fight against global warming. Below are suggestions for what you can
do to help. Pass the information on to your friends and family. Every little bit helps.

Lifestyle Changes Social Changes Recycle, Reduce, Reuse
Home Back
28.
become extinct if they do reproduce and increase their numbers.
Extinction is when a species‘no longer exists. Well known examples of extinct
species include dinosaurs and the dodo bird.
There are two types of endangered’species: Flora and Fauna.
Flora refers to plant life. Fauna refers to animals.


Home Back
29. Fauna - Temperate Climate
Here are some examples of animals in danger in this habitat. The list
is way bigger than this, and we should try to preserve their natural
habitat until they will not exist anymore.
Eastern Cougar, Vancouver Island Marmot, Sea Otter, Bowhead Whale,
Right Whale, Beluga Whale (St Lawrence.River, Ungava Bay and
Southeast Baffin Island-Cumberland Sound populations), Wolverine
(Eastem population), etc.

What causes them to become endangered?:
Because of the pollution, Global Warming and the destruction of their natural habitat, a lot of
these animals are in danger. Some of the birds are not flying to the south anymore, because the
weather is hot enougth in the winter in the continental area. Everything is interrelated, it's the
cycle of life. We have to stop the global warming and what causes it, by doing every small step we
can do. We should start by changing our habits at home and at work to save energy and try not to
encourage the big compagnies who are contribuing to the destruction of the natural habitat of the
Click here to learn about the temperate climate.
Home Back Endangered Species Arctic Climate Rainforest Climate Desert Climate
30.

Home Back Endangered Species
31. Fauna - Arctic Climate
The arctic is the climate which is
suffering the most from the Global warming.
The ice is melting and the natural habitat of the
animals is slowly disappearing.
This website takes an in-depth look at how global
warming is affecting the arctic climate, with special
attention to polar bears.

Endangered animals in the arctic climate include: the arctic fox, caribou, ermine, grizzly bear,
Harlequin duck, musk ox, polar bear and the snowy owl.
Click here to learn about the arctic climate.
Home Back Endangered Species Rainforest Climate Temperate Climate Desert Clima
32. Fauna - Rainforest Climate
The fauna in the rainforest climate include apes, parrots, tigers, panthers, etc.
The majority of species in this climate are in danger of. becoming endangered or extinct
because of the deforestation and:Clear cutting of their habitat.
Because of the commercial aspect of the wood in the tropical forest, some big’companies:
are clear cutting a very important part of the tropical forest. By cutting all those trees, they
are also destroying the natural habitat of an intense variety of animals and insects, and
also they are affecting the natural way of living)of these living creatures. If ajpart of the
animal food chain is interruped because’an insect, plant or animal doesnt exist anymore,
all of its predator are going to be affected by that. That is a-big problem because
everything is related and we are related to this food chain too. Some animals are
contribuing to the preservation of this habitat or are helping some other animals or insects
to live. The destruction of their natural habitat is so intense, that it is impossible to think of
reconstructing it. But, it's time to stop the problem, stop clear cutting and let the nature
grow for a while. But, if nobody stops the big companies who want to make money with
the trees, this situation will just never stop. Their natural habitat will disapear and the flora
and fauna will eventually disappear too.
Click here to learn about the climate of the rainforest.
Home Back Endangered Species Arctic Climate Temperate Climate Desert Climate
33. Examples of animals in this climate include: Camel Greater Bilby, Northern Hairy-nosed
Wombat, Bridled Nailtail Wallaby, etc.
Click here to learn about
the desert climate.


34.
Home Back Endangered Species
35.
36.
Examples of flora endangered in the arctic
climate include: Arctic moss, Arctic willow,
Caribou Moss, Bearberry, Diamond-leaf
Willow, Labrador Tea, Pasque Flower,Tufted
Saxifrage, etc

The melting of the glaciers, the destruction of their natural habitat, the weather
changing and the pollution in general are about to causes some very important
environmental problems in the Arctic aeria. The natural flora is in danger and a lot of
animals and insects depend on it to survive.
Click here to learn about the arctic climate.
Home Back Endangered Species Rainforest Climate Temperate Climate Desert Clima
37. Flora - Rainforest Climate
Many kinds of trees are being affected by clear cutting
for too long now. This is one of the reasons why some
species are disappearing and others are already extinct.
The pollution, changing weather and clear cutting are
the natural habitat of alot of flora and fauna. This is
getting worse everyday and we need to stop it. One day
there will be no tropical forest and all the flora that lives
in it will be extinct.

Click here to learn about the climate of the rainforest.
Home Back Endangered Species Arctic Climate Temperate Climate Desert Climate
38. Flora - Desert Climate

Examples of flora which are becoming endangered because of global warming are:
Conophytum, Drosanthemum, Gibbaeum, Glottyphyllum, Ruschia, Trichodiademal; and
some crassulacls: Adromischus, Cotyledon, Crassulal; aloacls Haworthia, etc.
Click here to learn about the desert climate.
Home Back Endangered Species Arctic Climate Temperate Climate Rainforest Climat
39.
Save Energy at Work

Home Back What Can | Do?
40. Save Energy at Home
1- Put your thermostat down of 1°C.
2- Use energy saving light bulbs. It lasts 12 times longer and it.uses less energy to
produce more light.
If everyone installed just one energy saving light bulb the CO, emissions Saved would fill 2
million double decker buses. And if each’house installed three energy saving bulbs, it
would save enough energy to run the country's streetlights for a year.*
Don't forget to turn off the lights when you leave a room, and sometimes you don't
really need to have more than one light open at a time. If you are done with your
computer or any other electric object, you should turn it off and unplug it. Then you will
save energy and you will also preserve the length of working life of your electric object.
Here are more ways to save energy at home.
Home Back Lifestyle Changes Save Energy at Work What Can! Do?
41. Your family can change some things in your home that may help
to preserve the heat, such as ;
+ Sealing the windows with a double glazing or with a special winter sealing product.
Because most of the old house have poor heat preserving capacities or old window
frame. So the energy lost is a big problem. What you can do to help is to puta
sealing silicone around the window frame, put.a special heat preserving plastic
surface on the window and thenithe heat will stay in the house and you will save
* In fact, you should think of every part of your home, which may lose energy because
of heat loss. (Windows, walls and the.roof, etc..)You can fill your wall with insulation,
so the insulation will be better.
+ If you want to be sure your home is a good energy saver, you should do an energy
check. Some websites can help you to identify some small energy waste in your way
of living. Then you will be sure you are doing everything to preserve and save
* You can also generate your own energy. By using solar energy or wind energy. You
can also use solar water heating, to produce your hot water! This way to have hot
water is cleaner and is a good way to preserve the environment.
Home Back Lifestyle Changes Save Energy atHome Save Energy at Work What Can I I
42. Save Energy at Work
Computer and lights
+ If you can turn of your computer when you don't use it during your working time,
turn it off. If you are the last one, tum everything off, the computers and the
lights in the general area. If you can change your light bulb, change it for an
energy saving light bulb.
* Close the windows and the doors. Then the heat will.not leave the room.
+ Always close every heat system if you can or reduce the level of heating. Close
the cooling system too. If you want to preserve the freshness of the room close
the curtains so the light won't come in.
Here are more ways to save energy at work.
Home Back Lifestyle Changes Save Energy atHome What Can | Do?
43. Wear sweaters or layered clothing so you
can adjust to stay comfortable.
If you want to have a lot of other very good
ideas for saving energy at work you should
visit this website.

Home Back Lifestyle Changes Save Energy at Home Save Energy at Work What Can | I
44.
Temperate Zone
Polar Regions
Four Climates.at Risk

Home Back
45.
46. The effects of Global Warming are causing various climate changes in both the Arctic and
the Antarctic regions.
How are Flora
and Fatina


Glacier melting Impact on human communi
Changes in Sea level

Home Back Temperate Climate Rainforest Desert
47. Glacier Melting
Arctic sea-ice extent has decreased by 2.9% per
decade over the 1978-1996 period.
Some of the first impacts of warming will be
associated with the loss of permanent.ice cover in
the far northem lakes; these impacts are already
taking place in the Canadian High Arctic. As the
length of the ice-free season increases, these
effects will be amplified. However, climate

warming is expected to increase levels of What will happened to th
dissolved matter in many arctic freshwater e animals living in the ar
systems as warming increases vegetation growth. ctic?
Lakes are draining into the sea from Permafrost
thawing and ground slumping
Home Back Polar Regions Changing SeaLevels Impact on Humans
48. What causes the sea level to change?
Terrestrial water storage,
extraction of groundwater,
building of reservoirs,
changes in runoff, and Surface and deep ocean
acerca circulation changes, storm surges
‘Subsidence in river
fan eh the ocean warms,
land movements, an the water expands
tectonic displacements
Home Back Polar Regions Glacier Melting

Exchange of the water
stored on land by
glaciers and ice sheets
‘with ocean water
Impact on Humans
49.

immediate environment


+ Early spring
+ Faster snowmelt and river break-up

+ Inaccessibility to certain areas due to unstable ice
+ Availability of some species has changed due to the
inability of people to hunt them under changing
environmental conditions.






+ Northward movement of the pack-ice edge is
expected to reduce the availability of seabirds as food
resources to many arctic communities.





50. TEMPERATE ZONE

Where is the Temperate Zone
Warm Summer Subtype:
+ Eastern and Midwestern U.S. from.
+ Atlantic coast to 100th meridian.
+ East central Europe.
+ Northern China.
* Northern Korea.
CooliSummer Subtype:
__ + New England, Great Lakes region.
+ South and central Canada.
+ Scandinavia, eastern Europe, *
What will be the impact of global warming in the Temperate Zone?
How are animals in the Temperate Zone affected by global warming?
How are plants in the Temperate Zone affected by global warming?
Home Back Rainforest Polar Regions Desert
51. We often pretend that impacts of global warming are only affecting the polar regions,
however , we are also concerned with this phenomena. Natural disasters such as hurricanes
and droughts are hitting us more and more every year.


A major factor contributing to global
warming in the Temperate Zone of North
America, apart from pollution, is
deforestation or clear cutting.
Home Back Temperate Climate Rainforest Polar Regions Desert
52. Hurricanes and Global Warming
One of the world’s leading organization dedicated to Global Warming research,
The Intergovernmental Panel on Climate Change (IPCC), has recently released
a report stating the influence of global warming in the increasing number of tropical
Storms. However, tropical storms vary often in tendency, therefore, no specific linkage
can be made between Global Warming and hurricanes.
Climate change caused by global warming is nonetheless
altering the temperatures among sea waters.
+ The surfaces of most oceans have warmed up by.0.25-0.5
degree Celsius during the past several decades.
+ The IPCC considers that the likely primary cause of the rise in
global mean surface temperatures in the past 50 years is the
increased gas concentration.
+ The hurricanes that do occur near the end of the 21st century
are expected to be stronger and have significantly more
intense rainfall than under present day climate conditions. This
expectation is based on an anticipated enhancement of energy
available to the storms due to higher tropical sea surface

Home Back Deforestation Drought
53. + Widespread cutting down of trees for fuel reduces
the soil's ability to hold water, drying out the ground,
triggering desertification, and leading to drought.
+ Greater evaporation, particularly during summer
and fall, could exacerbate drought conditions and
increase the risk of wildfires.
+ The wildlife therefore sees its habitat destroyed.



- » The world of agriculture may also be at risk.
Extreme drought, which makes modem agriculture
+ virtually impossible, is seen by’a new’Study from the
= Hadley Centre for Climate Prediction and Research
as possibly affecting about one-third of the planet in
the next century. (
__ http:/Avww.newstarget.com/020649.html) .
+ The effects of drought caused by global warming
is also threatening populations around the world
where clean water is already rare or difficult to
access. This phenomenon will only increase in the
years to come.

Home Back Hurricanes Deforestation
54.
55. THE TROPICAL RAINFOREST
Ww. the



Tr al
as ationg
What Flora
and Fatina
are affected?
Why is
the Rainforest
so Important
for the Earth?
Home Back Temperate Climate Polar Regions Desert
56. + Tropical rainforests are incredibly rich ecosystems that play a fundamental
role in the basic functioning of the planet.
+ Rainforests are home to probably 50 percent of the world's species, making
them an extensive library of biological and genetic resources.
+ In addition, rainforests help maintain the climate.by regulating atmospheric
gases and stabilizing rainfall, protect against desertification, and provide
numerous other ecological functions.
NORTH EUROPE
¥ Rain st
sourn [ i] facts

GE Distribution of tropical rain forests
Home Back Rainforest Deforestation in Rainforests
57. A ropical fore on a
small percentage of the Earth’s dry land, they


committed, to extinction
|More information on clear cutting and deforestation can be found here,
Eero Pe
58.



REDUCE * REUSE C
Composting Be creative!

59. Recycle and reuse electronic devices
As our society is becoming more dependent on electronic
devices in their every day lives, an urge to educate our whole
society unto how to recycle dying or non-functioning electronic
material. Often some equipment might be reusable or could be
taken apart to several separate piece to be reused into other
electronic objects.
Companies such as HP are taking action reinforcing their
policies on recycling electronic equipment. Simple actions
towards educating society into this way of thinking is definitely
large steps into making this planet a better place to live.
Here are some small steps you can take to recycle, reduce and
reuse electronic devices:
+ Recycle inkjet cartridges

+ Some companies offer recycling services directly on
fnainwebeites . Shop for items that are energy
friendly and that aim to reduce
+ Donate your equipment to good will, often this energy use.
electronic equipment can be sent to different areas in
the world where computers and other kinds of materials * Reconsider twice throwing
are needed. away your electronic equipment.
Try reusing it.
Home Back Recycle, Reduce, Reuse Compost Encourage Others Be Creative!
60.
61.
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Home Back Recycle, Reduce, Reuse Compost Electronics Encourage Others
62.
63. sh atcera sys pesmi ean pee
‘ ;
How can you save energy at home?
| 3. What are other travelling options youcan use instead of your car?
How can you save energy at work?


Home Back
64. References Used
This is a list of references used that do not appear as links throughout the PowerPoint.
Explore these websites for additional information on Global Warming and the