Across
- 4. energy in the form of heat from within the Earth
- 5. we use this method to create energy from atoms
- 7. is formed with the remaining of animals and plants that have been here over one million years
- 9. energy obtained from the Sun
- 10. this gas is colorless and odorless, and a very strong greenhouse gas
- 11. organic material made from plants and animals
Down
- 1. the renewable energy source that produces the most electricity in the United States
- 2. wind _______ directly harness wind power and convert it to electricity
- 3. Natural gas is used mostly to produce ______ energy
- 6. this recourse takes millions of years to be produced
- 8. a necessity of life (resource) which can regenerate quickly and that is replaceable