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Most roundworms are free-living. Most flatworms are ____.
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aquatic
|
|
Arctic terns, caribou, monarchs, and salmon are ____ animals.
|
arboreal
|
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Corals and sponges are ____ (surface-attached) animals.
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ectothermic
|
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Most reptiles, amphibians, and fish are ____ (cold-blooded).
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migratory
|
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Cobras, vipers, scorpions, and centipedes are ____ predators.
|
oviparous
|
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Most birds and reptiles are ____ (egg-laying).
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parasitic
|
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Sloths, koalas, and most chameleons are ____ (tree-dwelling).
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sessile
|
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Manatees, porpoises, seals, and walruses are ____ mammals.
|
venomous
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