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Most mammals and birds are ____ (warm-blooded).
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aquatic
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The ____ (top) shell of a turtle is called the carapace.
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arboreal
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Most roundworms are free-living. Most flatworms are ____.
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dorsal
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Mammals are classified as monotreme, marsupial, or ____.
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endothermic
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Manatees, porpoises, seals, and walruses are ____ mammals.
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feral
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Domesticated animals that have returned to the wild are ____.
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migratory
|
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Sloths, koalas, and most chameleons are ____ (tree-dwelling).
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parasitic
|
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Arctic terns, caribou, monarchs, and salmon are ____ animals.
|
placental
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