chordates-vertebrata-aves Flashcards by stephbeff t. | Brainscape

Q

feathers of

A

keratin

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Q

specialized bones

A

hollow air sacs

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Q

chambers heart

A

4

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Q

circulation system

A

double loop

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Q

egggg type

A

amniotic

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Q

feet have

A

scales

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Q

toes have

A

claws

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Q

how they get heat

A

endotherms

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Q

part of digestive tract

A

crop and gizzard

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