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gayaneshka [121]
3 years ago
9

Mammals lead more active lives than reptiles because mammals have body hair and more efficient hearts and _____.

Biology
2 answers:
Irina18 [472]3 years ago
6 0
The answer is "lungs" 
asambeis [7]3 years ago
5 0

My answer is: Mammals lead more active lives than reptiles because mammals have body hair and more efficient hearts and lungs.

 

<em>hope this helps!</em>


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