IT'S MY POWERPOINT PRESENTATION ON GLOBAL WARMING . SOME DATA ARE TAKEN FROM INTERNET.

1. GLOBAL WARMINGSCIENCE

2. Global Warming
Global Warming is the increase of Earth's average
surface temperature due to effect of greenhouse
gases, such as carbon dioxide emissions from
burning fossil fuels or from deforestation.

3. Global warming causes
 Carbon dioxide emissions from fossil fuel
burning power plants
 Carbon dioxide emissions from burning
gasoline for transportation
 Deforestation ,especially tropical forests
for wood, pulp, and farmland
 Increase in usage of chemical fertilizers on
croplands

4. Global warming causes
 Carbon dioxide emissions from fossil fuel
burning power plants

5. Global warming causes
 Carbon dioxide emissions from burning
gasoline for transportation

6. Global warming causes
 Deforestation, especially tropical forests
for wood, pulp, and farmland

7. Global warming causes
 Increase in usage of chemical fertilizers on
croplands

8. Effects of Global warming

9. Effects of Global warming
 Rise in sea levels worldwide

10. Hurricanes and other storms are likely to
become stronger.
Effects of Global warming

11. •Some diseases will spread, such as malaria
carried by mosquitoes.
Effects of Global warming

12. Effects of Global warming
•Sea levels are expected to rise between 7 and 23 inches (18 and 59 centimeters)
by the end of the century, and continued melting at the poles could add between
4 and 8 inches.
•Species that depend on one another may become out of sync. For example,
plants could bloom earlier than their pollinating insects become active.
•Floods and droughts will become more common . Less fresh water will be
available. If the Quelccaya ice cap in Peru continues to melt at its current rate, it
will be gone by 2100, leaving thousands of people who rely on it for drinking
water and electricity without a source of either.
•Ecosystems will change—some species will move farther north or become more
successful; others won’t be able to move and could become extinct. Wildlife
research scientist Martyn Obbard has found that since the mid-1980s, with less ice
on which to live and fish for food, polar bears have gotten considerably
skinnier. Polar bear biologist Ian Stirling has found a similar pattern in Hudson
Bay. He fears that if sea ice disappears, the polar bears will as well.

13. Reduce Energy Use
The energy you use at home and work contributes to
increased levels of carbon dioxide; usually, fossil fuels
are burned to produce and transport the energy,
releasing greenhouse gases into the atmosphere. By
reducing your energy use, you can reduce your
personal carbon footprint.
Preventive Measures for Global
Warming

14. Preventive Measures for Global
Warming
Stop Deforestation
Deforestation is a major contributor to global
warming. When large expanses of forest are
cut or burned, carbon dioxide, a greenhouse
gas, is released into the atmosphere. Because
trees also take carbon dioxide from the air,
cutting down large numbers of trees causes
carbon dioxide levels to rise even further.
Although much of the major deforestation is
taking place in tropical areas, we can take
action to help prevent further loss.

15. Preventive Measures for Global
Warming
Change Transportation Habits
Transportation --- in particular, car travel --- is
responsible for about 25 percent of energy use
in the U.S., and also puts chemicals and
pollutants into the air. To reduce our
emissions, we have to change our driving
habits. The easiest way to cut carbon
emissions is to drive less: carpool to work, take
public transportation, walk or ride a bike.
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