Across
- 4. related to nature and the environment
- 5. the Earth, our home
- 9. caring for the planet so future generations can live well
- 12. using old things to make new things
- 16. cutting down too many trees
- 17. a natural resource we must protect
- 18. a building or effect that keeps heat inside
- 19. old food and plants that become soil
Down
- 1. a long time with no rain
- 2. power from the sun
- 3. a gas that causes global warming
- 5. dirtying the air, water, or land
- 6. a material that is used a lot but takes a long time to break down
- 7. power we use to do things
- 8. things we throw away
- 10. the variety of animals and plants on Earth
- 11. energy that comes from natural sources like sun or wind
- 13. the usual weather in a place
- 14. fuel from ancient plants or animals like coal or oil
- 15. using something again instead of throwing it away