Global Warming

a) What causes global warming?

___ Global warming is happening because we are putting too much carbon dioxide into the air. Most of the carbon dioxide comes from cars, factories and homes.

b) How does carbon dioxide make the earth warmer?

___The sun heats the earth. Carbon dioxide traps the heat so it can’t leave the atmosphere. When there is a lot of carbon dioxide it traps more heat, so the earth is getting hotter.

c)  Why does it matter that the earth is getting hotter?

___ The Earth is already warmer than it was 100 years ago. The icecaps in the North Pole are starting to melt because of the higher temperatures and the sea levels are rising. This means that there will be floods in a lot of towns and cities.

d) What other problems are there?

___Some areas will become drier, like North America, Brazil and Russia. These places grow a lot of the world’s food. If the temperature rises by only one or two degrees, it will be too hot to grow crops in these countries.

e- What can we do?

___We all need to save energy so that we make less carbon dioxide. Don’t do anything that wastes energy. Remember to turn off the lights when you leave the room. If you can, walk to school or use your bike. Don’t ask your parents to take you in the car.