Across
- 1. attraction towards a specific object
- 5. a region seperated from it's surroundings by an energy boundry
- 6. warm, less dense water is drawn away and replaced by colder water
- 8. indicators for life
- 10. a movement of water down from the surface
- 11. cycle for nitrogen
- 13. area on ocean floor were methane seeps
- 16. an array of solar cells that generates power
- 18. a salt or ester of nitric acid
Down
- 1. a salt or ester of phosphoric acid
- 2. not biotic
- 3. using chemical reactions to produce energy
- 4. a region isolated by it's surroundings
- 7. animal like protists
- 9. group of atoms held together by covalent bonds
- 12. a photo cell where electromagnetic force is generated
- 14. a steam leading into a larger body of water
- 15. microorganisms
- 16. responsible overseeing of something important
- 17. living on the ground