Global warming By: J.W.

introduction Today we be discussing about Global Warming.

Problems that we have …. Global Warming is something that is happening now. We have been burning too much coal and that coal does not just disappear when you use it. It goes in the air and it makes Carbon Dioxide and that Carbon Dioxide hits the sun and the sun makes the Earth hot.

Global warming chart

Fossil fuels A fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing energy originating in ancient photosynthesis. ... Fossil fuels contain high percentages of carbon and include petroleum, coal, and natural gas.

Greenhouse gases On Earth, an atmosphere containing naturally occurring amounts of greenhouse gases causes air temperature near the surface to be about 33 °C (59 °F) warmer than it would be in their absence. Without the Earth's atmosphere, the Earth's average temperature would be well below the freezing temperature of water. The major greenhouse gases are water vapor which causes about 36–70% of the greenhouse effect; carbon dioxide (CO2), which causes 9–26%; methane (CH4), which causes 4–9%; and ozone (O3), which causes 3–7%. Clouds also affect the radiation balance through cloud forcing similar to greenhouse gases.

Global warming pictures

Short video

Recap on what we learned….. Fossil fuels: contains high percentages of carbon and include petroleum, coal, and natural gas. Greenhouse Gases: The major greenhouse gases are water vapors which causes about 36–70% of the greenhouse effect; carbon dioxide.

conclusion We are almost done with this presentation. In Conclusion, we need to stop using coal a lot and we need to stop cutting trees.

websites WWW.Wikipedia.com WWW.Youtube.com WWW.NationalGeograhpic.com