Kal6ina2jumich Kal6ina2jumich

25-02-2017
Biology

contestada

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

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tiffxdtn tiffxdtn

03-03-2017

The answer is "lungs"

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kittylike11 kittylike11

12-01-2019

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

hope this helps!

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