Environmental Issues

3. the action of clearing a wide area of trees
5. a measure of the amount of carbon dioxide released into the atmosphere as a result of the activities of a particular individual, organization, or community.
6. convert (waste) into reusable material.
9. gases in the earth's atmosphere that trap heat
11. energy derived from natural sources that are replenished at a higher rate than they are consumed
13. a biological community of interacting organisms and their physical environment

1. the presence in or introduction into the environment of a substance which has harmful or poisonous effects.
2. the variety of plant and animal life in the world or in a particular habitat, a high level of which is usually considered to be important and desirable.
4. he activities and processes involved in collecting, handling, processing, storing, and transporting waste materials from their point of generation to their final disposal location
7. a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.
8. the disposal of waste material by burying it, especially as a method of filling in and reclaiming excavated pits
10. the ability to be maintained at a certain rate or level.
12. (of a species) seriously at risk of extinction