Across
- 4. the production and discharge of something
- 5. community of interacting organisms
- 7. relating to or determined by the sun
- 8. waste material used to reclaim ground
- 9. The layer that grass and rocks are
- 10. something humans does that harms the environment Environment A place where plants and animal live
Down
- 1. prevent the wasteful or overuse of a resource
- 2. able to be maintained at a certain rate
- 3. contaminate with harmful or substances
- 4. something that is no longer in this world
- 6. decayed organic material used as a plant fertilizer a chemical substance added to soil or land