Earth Resoucres

1. The wise use of water, land, and other other resources to minimize waste or loss
4. The surroundings in which a person, animal or plant lives in
6. General term for any hydrocarbon that maybe used as a fuel, including coal, oil and natural gas
7. The introduction of harmful materials into our soil, air and/or water
8. To use less or make less waste
9. To make new things from old things
11. Harnessed by tapping natural underground resources of steam and hot water
13. The power generated by falling water
15. Water pollution that comes from a known and specific location
16. Rain or snow that is more acidic than normal
19. Meant to be thrown away after one use

2. A resource that takes millions of years to form
3. Something in nature that helps support life or meets people's needs
5. Water pollution that does not have a specific point of origin
10. A resource that is virtyally inexhaustible or that can be replenished over relatively short time spans
12. Grown only with natural fertilizers
14. Harnessed by constructing a dam across the mouth of a bay or an estuary in coastal areas
17. A soil like mixture made from rotting plants and animal matter
18. To use again
20. A material from which a useful mineral or minerals can be mined at a profit