Across
- 1. Type of solar energy that uses no equipment
- 5. Produces toxic ash
- 6. Used for fish to go over dams
- 7. Fossil fuel made up mostly of methane
- 8. Formed from the compression of decaying organic matter
- 9. Type of solar energy that uses equipment
Down
- 1. Capture light energy from the sun
- 2. Largest renewable energy source globally
- 3. Biomass fuel source that's easy to access
- 4. One of the most common subsistence fuels