marine biology "A" words

1. a carbonate mineral, one of the three most common naturally occurring crystal forms of calcium carbonate, CaCO 3. present in shells of pteropods/ heteropods and coral skeletons (9)
4. water column between 4000m - 6000m (13)
5. Nonbiological feature of the environment (7)
10. A neutral substitute for “community” but implying no necessary interrelationships among species; also called species assemblage. (10)

1. a class of marine invertebrates which includes the sea anemones, stony corals and soft corals (8)
2. The part of the water column where light does not penetrate. (7, 4)
6. A collection of animals or plants gathered or clustered together. (11)
7. without air' and refers to the body producing energy without oxygen. (9)
8. water column between 2000m - 6000m (7)
9. Gently dipping seabed surface comprised of sediment found at the base of a slope; commonly the product of slumping (sediment failure) of a steep slope. (5)

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