Across
- 3. porous underground layer of rock where water is stored
- 8. to move slowly down through earth's layers
- 9. having many small spaces or holes
- 11. things that meet our needs and wants
- 12. this type of water is on the earth
- 13. condensation in clouds that falls as rain, snow, or hail
- 14. this type of water has been used and needs to be cleaned
- 15. change of a gas into a liquid
Down
- 1. the way water circulates between air, earth's surface, and underground aquifers
- 2. this type of water is stored beneath earth's surface
- 4. changing of a liquid into gas
- 5. when water evaporates from the leaves of plants
- 6. using something carefully so its not wasted
- 7. this type of water has little or no salt
- 8. something that contaminates water, air, or soil
- 9. harmful change in the earth's environment caused by pollutants
- 10. water in large bodies (like oceans, seas, lakes)