Across
- 2. produced by burning fuel for power or heat, through chemical reactions, and from leaks from industrial processes or equipment
- 5. energy from any material that comes from plants
- 7. Found deep in the earth is flammable, colorless, and odorless
- 10. to upkeep of a natural resources to prevent them from disappearing
- 12. Biomass, solar, wind, Hydroelectric, geothermal
- 13. to use something again more than once
- 14. the process of making waste materials into new materials
- 16. energy that is made by flowing water
- 18. Fossilized carbon
- 19. Coal, oil natural grass
Down
- 1. Heat energy from deep within the earth (manga)
- 3. Fuels are Currently the world's primary energy source
- 4. Energy that is captured by turbines
- 6. layer in the stratosphere of the earth absorbs most of the ultra radiation from the sun
- 8. Gasses in the earth's atmosphere that trap heat
- 9. Energy from the sun
- 11. The energy generated during nuclear fission
- 12. to restore something
- 15. Thick black liquid
- 17. is a renewable powered powered by the natural rise and fall of the ocean tides.