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3 votes
Birds are __________ and have a _____-chambered heart.

A. endothermic; three
B. endothermic; four
C. ectothermic; three
D. ectothermic; four

User Jitu
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2 Answers

5 votes
Yea it's definitely D
User Jony Lalwani
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4 votes
Birds are endothermic and have a four chambered heart.
User Valerion
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