Flying birds with keeled sternums are known as ___________.
Correct Answer:
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Q18: Most of the birds that migrate breed
Q19: In birds,reproductive organs of both sexes shrink
Q20: The raptors,such as hawks and eagles,are notable
Q21: Birds are
A)synapsids.
B)diapsids.
C)anapsids.
D)aviapsids.
Q22: Bird species far outnumber all other vertebrates
Q24: Flightless birds
A)tend to be small.
B)have a well-developed
Q25: The famous fossil bird that supports the
Q26: An example of a bird with soaring
Q27: The muscle which raises the wing of
Q47: The stomach of a bird is comprised
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