Energy Resources

1. reprocessing a resource so materials can be used again
3. preventing the loss of a reource by way of thoughtful management of it
5. energy resource that produces electricity from moving water
9. harmful material that can enter the biosphere through the land, air, or water
13. energy resource that produces electricity from the sun
15. energy resource from radioactive elements
16. gases that are released from the burning of fossil fuels
18. a condition or situation that causes problems
19. energy resource that produces electricity from moving air

2. measure of total human impact on an ecosystem
4. making a decision to not use a resource when there is an alternative, such as walking rather than traveling by car
6. machine that is turned or rotated to generate electricity
7. rising atmospheric temperatures caused by the release of greenhouse gases
8. energy resource that produces electricity from life, such as corn and wood
10. energy resources that are limited in supply or used at a fastser rate than can be replaced
11. energy resource that produces electricity from water heated underground
12. energy resource that produces electricity from the burning of coal, oil, and natural gas
14. a condition or circumstance that puts one in a favorable or superior position.
17. energy resources that are not depleted when used