In the northeastern pacific ocean, sea otters occur at a relatively low abundance. by preying upon sea urchins, sea otters maintain underwater kelp (large algae) "forests", which would otherwise be decimated by the herbivorous sea urchins. the kelp forests supply food for a wide variety of marine organisms, as well as providing refuge from predation and nursery habitat for juveniles. based on this, what type of species best describes sea otters?
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Give the biological term for: structures that display characteristics of living organisms only within living cells
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Consider darwin's first writings on the theory of natural selection. an important point of darwin's essay on the principle of population, written in 1798, was a peer's observation that in nature plants and animals produce far more offspring than can survive, this observation can be attributed to a) charles lyell. b) thomas malthus. c) jean-baptiste lamarck. d) johann friedrich meckel.
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Which is not a type of symmetry? a. asymmetryb. radial symmetryc. bilateral symmetryd. lateral symmetry
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If a grape were placed in a hypertonic solution what would happen and why?
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In the northeastern pacific ocean, sea otters occur at a relatively low abundance. by preying upon s...
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