Across
- 2. cloudiness of a fluid
- 4. nonliving factors
- 7. rapid growth of algae
- 9. process of water penetrating from the ground into the soil
- 10. population of how many included in a herd or group
- 13. water safe for humans to drink
- 15. water cannot pass through
- 18. interaction between organisms or species
- 19. process of liquid slowly passing through a filter
- 20. water can pass through
Down
- 1. manned deep ocean research submersible
- 3. portion of land drained by a river and its tributaries
- 5. a person who studies the ocean and its wildlife
- 6. being passed down from generation
- 8. factors in an environment that restrict population growth
- 11. underwater remotely operated machine
- 12. sticks together
- 14. living factors
- 16. underground layer of permeable rock
- 17. an area where life exists
- 21. water sticks to non water molecules