Across
- 1. Symbol for Nitrate
- 2. Humans, all living things
- 4. Rain, Snow, Hail..
- 5. The process where water is filtered into the ground
- 6. Moving reactions to the extreme
- 10. Process which liquid water is changed into gas
- 12. Blanket of gas that separate Earth from Space
- 13. A part of the Universe that can be studied separately
- 14. Lake, anybody of water
- 17. Volume of water moving through a river over a given period of time
- 18. Matters doesn't leave or enter
- 19. One essential element of life
Down
- 1. Creating stability in a system
- 3. Spread out
- 7. Measures how clear water is
- 8. Water traveling on the surface to larger bodies of water
- 9. Matters that can enter or leave
- 11. Water unable to travel through
- 15. Dead bodies of water and species within it
- 16. Our best friends