Across
- 1. power that makes things go
- 2. things we use from nature, like trees, water, and sunlight
- 5. a journey from start to finish (and then hopefully reused!)
- 6. making less pollution by using clean energy
- 8. the weather on earth
- 9. sealed up so it doesn't leak
- 12. using less so we don't run out
- 14. good for the earth and doesn't cause harm
- 15. nature, trees, animals, and the air we breathe
Down
- 1. not wasting energy
- 3. power from the sun
- 4. it won't run out because nature makes more of it
- 7. a local energy-efficient and sustainable builder
- 10. material used to keep heat in the house
- 11. turning old food into dirt
- 13. making something new from something old