One adaptation to flight in birds is lighter bones,which lack
A)calcium.
B)collagen.
C)bone marrow.
D)the periosteum.
E)medullary cavities.

Name: One adaptation to flight in birds is lighter bones,which lack A)calcium. B)collagen. C)bone marrow. D)the periosteum. E)medullary cavities.
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Question

Quizplus · Accepted Answer

Birds have lighter bones to aid in flight, and one adaptation is the reduction or absence of bone marrow in some of their bones. This makes their bones lighter without compromising strength.

One Adaptation to Flight in Birds Is Lighter Bones,which Lack