Earth's Resources

3. government policies to reduce air pollution
5. turn _____ the sink while brushing your teeth to conserve water
6. a material found in nature that is useful to humans and can be used for economic gain
8. all types of energy on Earth ultimately come from the ____
10. the percent of the United State's energy consumption that comes from renewable energy sources
11. a type of energy produced by the burning of biological material such as plant and animal waste
12. a type of energy produced by spinning turbines harnessing the energy of moving air
13. a type of energy produced by collecting the sun's energy
14. the percent of the United State's energy consumption that comes from fossil fuels

1. a type of energy produced by harnessing heat from deep beneath Earth's surface
2. a type of energy produced by the movement of water through a dam
3. the saving of natural resources
4. Fossil fuels were formed when the remains of dead plants and animals were put under intense _____ and pressure
6. a type of resource that cannot be replaced when used up or takes a long time to replenish
7. a type of resource that is unlimited and can be replaced rather quickly
9. oil, natural gas, and coal are all types of ______ fuels