Across
- 3. The outermost layer of the atmosphere
- 4. This protects us from the sun's harmful UV in the stratosphere
- 7. A sensitive ecosystem that helps clean water naturally
- 9. Prefix for water
- 12. The smaller the particle, the small the ___ size
- 13. True or false, clay is impermeable
- 14. The layer of the atmosphere where weather occurs
- 16. How plants participate in the water cycle
- 17. Water comes out of the ground by itself
- 18. The layer of the earth with the living things
Down
- 1. A natural process of recycling organic matter
- 2. Cannot be penetrated by water
- 5. The most prevalent gas in the atmosphere
- 6. This layer of the the atmosphere burns up meteors
- 8. The power source behind the water cycle
- 10. The rocky part of the earth
- 11. The percentage of the type of water is very small
- 13. Layer of the atmosphere where the Northern Lights exist
- 15. Water that infiltrates the ground through cracks and pore