Across
- 2. Floating in the air
- 4. A place with lots of people and buildings
- 6. helps u when ur sick
- 9. A hot, dry place with lots of sand
- 11. Something from nature used to make things
- 13. Where something comes from
- 14. Something that can cause harm.
- 15. Something that makes the earth dirty
Down
- 1. Dirty things in the air, water, or land.
- 3. To use something all up
- 5. How fast or slow something happens
- 7. Tiny bits of dirt in the air or on things
- 8. A gas made by cows and garbage
- 10. A very fast flying machine
- 12. A place where trash is buried