WG 8C

1. This can spin giant "fans" that produce electricity
4. the introduction of contaminants into the natural environment that cause adverse change
5. The practice of saving natural resources
9. Resources that can be replaced within a human's lifespan
11. oil, coal, and natural gas are known as _____ fuels
12. in danger of extinction
13. Energy produced using the sun's rays
15. nonrenewable products such as steel, aluminum, and copper
16. It's important to keep pollution out of this resource so we have plenty to drink

2. Giant reactors change the structure of atoms and produce this type of power
3. Naturally occurring substances that cannot be replaced
6. region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation
7. Sometimes called petroleum, this can be converted to gasoline and other products
8. gas Gas forms beneath the earth's surface and is very flammable
10. A black sedimentary rock that burns easily
14. pollution can make it difficult for humans to breathe and for plants to grow