Across
- 3. a tool used for wind energy
- 6. panels that absorb the energy provided by the sun.
- 8. the mass of organisms in a certain place.
- 11. the solid form of fossil fuel.
- 12. the gas form of fossil fuels.
- 13. a renewable resource powered by windmills.
- 14. energy provided by the heat of the earth.
- 15. a resource that can be renewed in a lifetime
Down
- 1. the matter that is layered on top of fossil fuels
- 2. the liquid form of fossil fuels.
- 4. a resource that cannot be renewed in a lifetime
- 5. energy provided by the sun.
- 7. the power that is provided by moving water.
- 9. a very long period of time
- 10. a dam that keeps the water in a certain spot to keep it from overflowing.