Natural Resources

2. to use a material in a different way rather than throwing it away
6. a reddish brown metal that is a good conductor of electricity
9. to make something impure and unsafe to use
12. a fossil fuel that is a black rock
13. when water falls from the sky as a liquid or a solid
15. the amount of a material that is available to be used
17. to decompose, to rot
18. a fossil fuel made of a mix of different gases that we use for heat and energy
19. a material found in nature that people use
22. a material that cannot be replace quickly enough and will run out
23. to remove or take out
24. to stop something from happening

1. a source of energy that formed from the remains of dead plants and animals millions of years ago
3. to protect and care for natural resources, to save
4. when water changes from a liquid to a gas
5. when water changes from a gas to a liquid
7. materials that are always being replaced and will not run out
8. a mixture of decaying materials that is used to feed plants
10. to throw something away or use carelessly
11. the process by which water goes from the sky to Earth over and over again
14. a metal mineral that is used to make steel, is magnetic and can rust
16. silver,lightweight metal that is not magnetic
20. a strong metal that is made of iron, carbon, and other metals
21. rock that contains metal
25. a fossil fuel that is black liquid