Across
- 4. the gas from water
- 6. to change from a liquid to a gas
- 7. a giant ice sheet that moves slowly
- 9. to change from a gas to a liquid
- 10. bits of soil
Down
- 1. harmful matter that makes water soil or air dirty
- 2. a flowing stream of water within a ;ager body of water
- 3. the temperature drops
- 5. a material found in nature useful to humans
- 8. to wear away
- 11. an imaginary line around earth halfway between the north and south poles
