Across
- 2. a clean source of energy developed from the Earth's interior heat
- 3. animal droppings, old motor oil, and lawn fertilizers can all cause what in water?
- 4. the production of electricity by water creates this type of power
- 7. power derived from the heat and light of the Sun
- 10. this can be processed into gasoline, jet fuel, and heating oil
- 12. when people try to use as little water as possible it is called what?
- 13. resources that can be naturally replaced
- 15. the loss of forest areas
- 16. being rich in resources can help a country develop this
Down
- 1. human actions, such as using oil or water, affect this
- 2. these people want to know how and why people move from place to place
- 5. people living in this type of forest depend on their environment for all of their needs
- 6. the planting of new trees to reverse deforestation
- 8. lead, granite, and limestone are examples of this type of resource
- 9. the movement of ideas or behaviors from on region to another
- 11. resources that can't be replaced naturally after they've been used
- 14. coal, petroleum, and natural gas are examples of this type of fuel