Across
- 3. Safe and good to eat.
- 4. A green plant that grows in the ocean.
- 5. Made from old materials that were used before.
- 6. Something you can use many times, not just once.
- 7. Can turn into natural food for garden soil after you throw it away.
- 9. Things that break down naturally in nature and do not hurt the Earth.
Down
- 1. An object or material that you can process and use again to make a new thing.
- 2. Good for the Earth so it can last a long time.
- 8. Trash or things you do not need and throw away.