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Which of the following is an internal adaptation that enables birds to fly? A. Feathers B. Hollow bones C. Sharp beaks D. Sharp claws
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4 votes
Which of the following is an internal adaptation that enables birds to fly?

A. Feathers
B. Hollow bones
C. Sharp beaks
D. Sharp claws

User Iljn
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7.6k points

1 Answer

8 votes
(B.Hallow bones because bones are inside the body
User Grantley
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