Earth Resoucres

3. A material from which a useful mineral or minerals can be mined at a profit
4. Grown only with natural fertilizers
5. A resource that is virtyally inexhaustible or that can be replenished over relatively short time spans
8. The introduction of harmful materials into our soil, air and/or water
11. Water pollution that comes from a known and specific location
13. The surroundings in which a person, animal or plant lives in
14. Harnessed by constructing a dam across the mouth of a bay or an estuary in coastal areas
15. Something in nature that helps support life or meets people's needs
17. To use again
20. Harnessed by tapping natural underground resources of steam and hot water

1. Meant to be thrown away after one use
2. The power generated by falling water
6. Water pollution that does not have a specific point of origin
7. A soil like mixture made from rotting plants and animal matter
9. Rain or snow that is more acidic than normal
10. A resource that takes millions of years to form
12. General term for any hydrocarbon that maybe used as a fuel, including coal, oil and natural gas
16. The wise use of water, land, and other other resources to minimize waste or loss
18. To make new things from old things
19. To use less or make less waste