Across
- 4. Introduction of harmful materials into the environment.
- 5. Cutting of trees
- 8. Green pigment in plants
- 9. conversion of waste into usable material
- 10. no longer in existence
Down
- 1. The process by which plants produce food
- 2. How do plants take in the water and nutrients?
- 3. Washing away of top layer of soil
- 6. What do plants produce?
- 7. How many states of matter are there?