Across
- 2. things that you buy, things made
- 7. energy from the sun
- 9. a structure used to generate energy from the wind
- 11. energy that can't be used again and again
Down
- 1. advancement, moving to a goal
- 3. energy that can be used again and again
- 4. to dirty the land or air
- 5. energy,
- 6. to change
- 8. an example of a fossil fuel
- 10. ancient plants, bones, or leaves