Across
- 4. a celestial body moving in an orbit around a star
- 5. the gases that surround the earth or another planet
- 7. a place to dispose of waste by burying it and covering it with soil
- 9. decayed organic material used as plant fertilizer
Down
- 1. the natural environment of a plant or animal
- 2. trash that is left lying in an open or public place
- 3. reduce, reuse and _________
- 5. the month that Earth Day is in
- 6. a substance introduced to an environment that has harmful or poisonous effects
- 8. a very large body of water