Global warming

2. a form of energy that comes from the sun.
4. Capture a method used to collect carbon dioxide and store it
7. the process of clearing trees to convert the land for other uses
9. energy a renewable energy source that uses the heat from the earth to produce steam
12. food-making process in plants.
15. is a building that contains glass walls and a glass ceiling
16. rain rainwater contains dissolved chemicals that make it acidic

1. respiration the chemical reaction involving oxygen and glucose to produce energy
3. footprint a measure of the amount of carbon dioxide) that is produced due to human activities
5. the layer of gases around the earth
6. cores samples of ice extracted from ice sheets containing a build-up of dust, gases and other substances trapped over time
8. a type of energy wave which is part of the electromagnetic spectrum
10. a sedentary rock containing calcium carbonate and other minerals
11. regions of the Earth divided according to dominant vegetable type
13. warming increase in the surface temperature above Earth
14. fuel a fuel that is non-renewable and unstainable