Across
- 4. Waste that harms oceans and land.
- 5. Animals and plants living in nature
- 7. Living things such as fish, plants, and animals.
- 9. The process of using things again
- 10. Natural home of an organism
- 11. Tiny plants in the ocean that produce oxygen
Down
- 1. Using resources wisely to protect the future
- 2. Keeping nature safe and healthy
- 3. The Earth's air, water, and land together
- 6. give the answer in the crossword
- 8. The largest body of salt water on Earth.