Global warming is an increase in the average temperature of the earth's atmosphere caused by human activities that produce greenhouse gases like carbon dioxide, methane, and nitrous oxide. Carbon dioxide is the main greenhouse gas and is produced through burning fossil fuels. Methane comes from agriculture and land use, while nitrous oxide is emitted from transportation, waste, and fertilizer use. If unchecked, global warming will have numerous negative effects on human health, agriculture, weather patterns, air quality, water supply, and ecosystems. Potential solutions include transitioning to alternative energy sources, planting trees to absorb carbon, and reducing greenhouse gas emissions.

2. Topic:
Global Warming, Causes and Effects
Presented To:
Mam Nusrat
Presented By:
azaz

3. Global Warming
An increase in the average
temperature of the earth’s atmosphere
especially a sustained increase that causes
climatic changes.

4. Sun
Solar
Energy
Solar
Energy

5. Sun
Solar
Energy
Radiation
Cooling

6. Sun
Solar
Energy
Radiation
Cooling

7. Sun
Solar
Energy
Radiation
Cooling

8. Causes of Global Warming

9. Nitrogen (N2)
Oxygen (O2)
Water (H2O)
Carbon Dioxide (CO2)
Methane (CH4)
Non-
Greenhouse
Gases
99%
Greenhouse
Gases
1%
Earth’s Atmospheric Gases

10. Sun
Greenhouse Effect

12.  The greenhouse effect is caused by human activities
which produce the greenhouse gases; carbon dioxide,
methane, nitrous oxide and fluorocarbons.
 Carbon dioxide is the main greenhouse gas and is
produced by fossil fuel burning power plants, heating
systems, factories, and modes of transportation that burn
fossil fuels.
 Methane is another greenhouse gas produced by human
use of land, including the livestock we use and such
agricultural objects as rice fields, wetlands and marshes.
 Nitrous oxide is produced by the exhaust of cars, human
disposal of waste and human use of nitrogen-based
fertilizers.
 Fluorocarbons are gases which are emitted when humans
use their refrigerators and their air conditioners
Causes

13. Affects
• Global warming will affect human health in a
number of different ways
• The spread of infectious diseases will be
affected
• Agriculture will be affected
• Extreme weather patterns will be affected
• The amount of smog near the ground will be
affected
• The supply of freshwater available to humans
will be affected
• Coral reefs
• The polar ice caps

14. Solution
Alternative Energy
Trees
Greenhouse Gasses Out

15. http://www.slideshare.net/mshadley
50/global-warming-causes-and-
effects-14731645
http://en.wikipedia.org/wiki/Effects
_of_global_warming_on_human_h
ealth
http://www.ipcc.ch/ipccreports/tar/slides/
http://www.slideshare.net/guestfb4
4565/a-problem-solution-of-global-
warming
References

16. The End
(But not of global warming)