Environment

1. Variety of plant and animal species in an environment
6. The process by which water vapor in the air is changed into liquid water
8. Under the threat of extinction
10. Fastest cat in the world
14. A protected green area
15. Process that converts organic material into nutrient- rich soil through decomposition

2. Absorbs harmful ultraviolet radiation from the sun and is damaged by chlorofluorocarbons
3. A network of food chains existing together in an ecosystem
4. Animal that is hunted by another animal for food
5. Organism that produces their own food
7. Smoke and other pollutants combined with fog
9. Rain that contains a high level of pollutants
11. To use or take advantage of natural resources
12. Earth Day celebrated on ___
13. ___ released accidently by tankers and pipelines are very harmful to marine ecosystems