Across
- 4. What creates the most oxygen?
- 5. Throwing trash around and not into a trashcan
- 6. The gas that we need to breathe
- 8. Dangerous kinds of gasses that get released by factories
Down
- 1. What happens when all animals of one species die out
- 2. The act of turning trash into reusable material
- 3. Waste and dangerous chemicals in the air, water or land
- 7. The name of our planet