Across
- 4. more than one cow
- 5. what plants breathe out
- 6. the production and discharge of something especially gas or radiation
- 7. makes emissions
- 8. stuff in smog
- 9. what plants breath in
Down
- 1. where animals live
- 2. the action of clearing a wide area of trees
- 3. when pollutants mix with the air
- 10. biggest rainforest in the world