Across
- 4. A layer in the Earth's atmosphere that protects us from the sun's harmful rays.
- 5. Using resources in a way that doesn't harm the environment.
- 6. Using something again instead of throwing it away.
- 7. Able to be replaced or replenished naturally.
- 10. A structure that traps heat from the sun, keeping it warm inside.
Down
- 1. A place where plants and animals live and can find what they need to survive.
- 2. Something harmful that makes the air, water, or land dirty.
- 3. The act of protecting and preserving natural resources.
- 8. A community of living organisms and their environment.
- 9. Decayed organic matter used as fertilizer for plants.