Environment & Ecology

2. snowfall A large amount of snow falling over a short period of time.
3. warming The gradual increase in the Earth's average temperature.
5. A strong tropical storm with powerful winds and heavy rain.
6. The process of moving from one region to another, usually seasonally.
9. footprint A measure of how much pollution a person, company or country creates.
10. turbine A machine with large blades that produces electricity from moving air.
11. species A species that is at risk of disappearing forever.
13. The variety of plant and animal life in a particular area.
14. dioxide A gas that contributes to global warming and is produced when fossil fuels are burned.

1. The cutting down of large areas of forest.
4. A situation when there is very little or no rain for a long time.
5. A period of extremely high temperatures that lasts for several days or weeks.
7. A storm with strong winds, thunder and lightning.
8. A place where an animal or plant normally lives.
12. energy Energy produced from sources that will not run out, such as wind or sunlight.