|
Most millipedes secrete ____ substances for defense.
|
aquatic
|
|
Manatees, porpoises, seals, and walruses are ____ mammals.
|
dorsal
|
|
Mammals are classified as monotreme, marsupial, or ____.
|
endothermic
|
|
The ____ (top) shell of a turtle is called the carapace.
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feral
|
|
Most mammals and birds are ____ (warm-blooded).
|
migratory
|
|
Most birds and reptiles are ____ (egg-laying).
|
oviparous
|
|
Arctic terns, caribou, monarchs, and salmon are ____ animals.
|
placental
|
|
Domesticated animals that have returned to the wild are ____.
|
poisonous
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