4. Heat Ultra violet rays Some heat stays in atmosphere. Ultra violet rays don´t stay.

5. Methane Naturally it is formed in marshes and bogs. Dead plants and animal decay and by the termites. Human beings produce methane by growing rice, farming cattle, burning waste and burning fossil fuels. Nitrous Oxide Naturally it is produced by oceans and by lightening strikes. Humans have increased it by the production of nylon and fertilisers. Carbon Dioxide Naturally it is produced by the animals when they breathe, dead animals, plants, and forest fires. Humans have increased the amount by burning fossil fuels like coal, oil and gas, and by destroying forests.

6. ARCTIC AND ANTARCTIC EFFECTS

7. BEFORE NOW

12. *The temperature increased by 1 degrees. It will increase 13 to 9 degrees if we don't stop it by the end of the century.

14. *Global warming in the Arctic is happening now. The report concludes that the northern ice cap is warming at twice the global rate and that this will lead to serious consequences for the planet.

18. Hydroelectric power uses the energy of mowing water to make electricity. Fuel hydro plant renewable Very low cost Another benefit is that hydro plants do not affect air quality.

19. The force of moving water is very powerful and uses that force to generate electricity.

20. Dams that create moving water.

21. ♪G♪Gates that can open or close. ♪ Control the water flowing over the dam.

26. Hydrothermal *Uses steam and hot water Geopressurized *Uses hot water (around 350°F) and hydraulic turbines Petrothermal *Uses dry hot rocks requiring water injections to make steam.

28. Solar Power is energy produced by the sun in the form of heat and light. Solar energy is clean Doesn`t pollute There is lots of it It is renewable fuel

32. Wind Windmils turn with wind This generates electricity

34. ♪ Urgent need of strategies ♪ to reduce the potential impact of greenhouse gas emissions ♪ that result from economic development in developing nations

36. What would you do to help Global Warming? I w o u l d h e l p t h e G l o b a l W a r m i n g b y r e c y c l i n g a l l t h e g a r b a g e : 1 ) Y o u h a v e t o t e l l a l l y o u r f r i e n d s t o d o a l l t h e s a m e. 2 ) I f y o u s e e s o m e t h i n g f a l l e n o n t h e f l o o r p i c k i t u p. 3 ) D o n ’ t w a i s t p a p e r o r s o m e t h i n g t h a t y o u c a n r e c y c l e.

37. People are suffering of climate changes. No doubts about why there is this climate: all the papers and cutting down trees and things that contaminates the floor, air and water in all the world are melting the two poles that's why there are a lot of hurricanes and rains exc.

40. Hail

41. Hurricanes and storms

42. Strong rain and wind

43. If we recyle all the things is better for the climate!! If we dont throw all the garbage and we dont cut trees we would have a better world. At school we could do projects that says we have to recyle papers and not to cut trees and with a group of people hang them in the walls all arownd the school!!