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Ch. 31 Reptiles & Birds

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A	B
ectotherm	rely on behavior to help control body temperature
amniotic	egg, named after the amnion, one of the four membranes that surrounds the developing embryo
carapace	dorsal part of a shall
plastron	a ventral part
feather	are made mostly of protein and develop keep them warm
endotherm	animals that can generate their own body heat
crop	which is located at the lower end of the esophagus
air sac	when a bird inhales, most air first enters large posterior

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