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Domesticated animals that have returned to the wild are ____.
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aquatic
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Mammals are classified as monotreme, marsupial, or ____.
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arboreal
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Most reptiles, amphibians, and fish are ____ (cold-blooded).
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ectothermic
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Cobras, vipers, scorpions, and centipedes are ____ predators.
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endothermic
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Most millipedes secrete ____ substances for defense.
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feral
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Manatees, porpoises, seals, and walruses are ____ mammals.
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placental
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Most mammals and birds are ____ (warm-blooded).
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poisonous
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Sloths, koalas, and most chameleons are ____ (tree-dwelling).
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venomous
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