Genetics

8. total mass of organisms in a given area or volume.
12. feeder an animal that lives on or in the sediment of the sea floor.
13. spend part of life as plankton, other part not.
14. organism that eats plants and animals
16. feeder feeding by filtering out plankton or nutrients suspended in the water.
17. catching food and organic material from the water.
24. a yellowish brown dinoflagellate present in large numbers in the cytoplasm.
26. fish born in freshwater who spend most of their lives in saltwater but return to fresh water to spawn.
27. interaction between two different organisms living in close physical association.
30. pressure produced or associated with osmosis.
32. when the body/brain doesn't get enough oxygen.

1. the process of maintaining salt and water balance.
2. an organism that decomposes organic material.
3. having live young that developed inside the body of the parent.
4. animals that eat meat.
5. the natural home environment of an animal, plant, or other organism.
6. migrating down rivers to the sea to spawn.
7. animals living on the surface of the seabed/riverbed.
9. waste or debris.
10. producing young by means of eggs
11. living organisms that are able to swim and move independently
15. the area above water level at low tide and underwater at high tide.
18. anything associated with or occurring on he bottom of a body of water.
19. a eukaryotic organism that is not an animal, plant, or fungus.
20. to feed on growing grasses and herbs.
21. a gas filled sac present in the body of many bony fishes, used to maintain and control buoyancy.
22. animal that feeds on plants.
23. corals, jellyfish, sea anemones.
25. protective coloration of some animals.
28. animals without a backbone
29. one of the 2 forms found in phylum cnidaria
31. the animals living in the sediments of the ocean floor or lake beds