Marine Biology

2. the natural home or environment of an animal, plant, or other organism
3. interaction between two different organisms living in close physical association, typically to the advantage of both.
9. physical rather than biological; not derived from living organisms
11. a stretch of salt water separated from the sea by a low sandbank or coral reef
14. the amount of carbon dioxide and other carbon compounds emitted due to the consumption of fossil fuels by a particular person, group, etc
15. the active immature form of an insect, especially one that differs greatly from the adult
16. the tidal mouth of a large river, where the tide meets the stream
17. a process in which deep, cold water rises toward the surface

1. the is the saltiness or dissolved salt content of a body of water
4. the scientific study of organisms in the sea or other marine bodies of water
5. a sedentary type of animal form characterized by a more or less fixed base, columnar body, and free end with mouth and tentacles,
6. relating to or resulting from living things
7. the area that is above water at low tide and under water at high tide (in other words, the area between tide marks)
8. tourism directed toward exotic, often threatened, natural environments, especially to support conservation efforts and observe wildlife
10. a hard stony substance secreted by certain marine coelenterates as an external skeleton, typically forming large reefs in warm seas
12. microscopic plants
13. single-celled photosynthetic, dinoflagellates that are able to live in symbiosis with marine invertebrates such as corals, jellyfish, and sea anemones