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| An expression of a helpful trait coming directly from the genetic information already possessed by at least some individuals in a genetically diverse population |
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| Rows of comb-like horny plates that project from the upper jaws of filter-feeding whales |
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| A method of analyzing sound waves to locate objects in the water column |
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| An activity an organism would do in its natural habitat |
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| A delay in implantation of an embryo into the uterus, allowing for the proper timing of birth |
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| There is only one marine species of these, a crab-eating from in Southeast Asian swamps |
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| Sea otters and polar bears- thick fur, live almost exclusively in the water |
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| large groups that wild species gather into |
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| birds with webbing between all four toes |
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| Dolphins, whales, porpoises- mammals, flippers, dorsal fins |
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| remove excess salt from some marine birds and sea turtles |
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| differ from their land counterparts because of their laterally flattened tails |
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| holes through which cetaceans breath |
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| birds with long narrow wings who spend most of their time flying over the ocean |
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| muscle protein that allows for the storage of oxygen |
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| rough patches of skin that form where whales have hair |
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| Manatees, dugong, sea cows- large, slow=moving, docile, herbivores, shallow water |
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| the large, rounded forehead of dolphins that focuses and direct sound waves for echolocation |
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| muscular valves that control air pressure while a dolphin makes sound for echolocation |
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| Marine mammals usually live in... |
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| One reason seals and sea lions are different |
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| Their ears. (sea lions have external ears, seals do not) |
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| an intestinal secretion from whales used in expensive perfume |
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| Why marine birds are more distributed than reptiles |
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| 1) Birds are more mobile 2) Birds are endothermic, reptiles are ectothermic |
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| How it can be determined what birds eat |
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| What stops marine animals from getting the bends |
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| a bird that periodically spreads its wings because it does not have oil glands |
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