|
Owls, bats, and crickets are ____ (active at night).
|
feral
|
|
The ____ (bottom) shell of a turtle is called the plastron.
|
migratory
|
|
Mammals are classified as monotreme, marsupial, or ____.
|
nocturnal
|
|
Most birds and reptiles are ____ (egg-laying).
|
oviparous
|
|
Cobras, vipers, scorpions, and centipedes are ____ predators.
|
parasitic
|
|
Domesticated animals that have returned to the wild are ____.
|
placental
|
|
Arctic terns, caribou, monarchs, and salmon are ____ animals.
|
venomous
|
|
Most roundworms are free-living. Most flatworms are ____.
|
ventral
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