Across
- 3. large arrays of wind turbines,
- 8. when bacteria decomposes organic wastes
- 9. liquid fuels that can also be derived from biomass
Down
- 1. power that converts movements of the wind into energy
- 2. use of the sun's energy to heat something directly
- 4. energy from the sun can be gathered by collectors and used to heat water or to heat a building.
- 5. Plant material, manure, and any other organic matter that is used as an energy source
- 6. solar cells that convert the sun's energy into electricity
- 7. energy that can be used again