Across
- 4. harmful or poisonous material in the air, water, and ground
- 6. very little of something
- 7. glass buildings that are used to grow plants and protect them from the weather
Down
- 1. large buildings where things are built or made by people and machines
- 2. large tanks or tubs that can hold water or other liquids
- 3. filled up; no room left for anything else
- 5. stands tall or points up