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It is much easier for a small animal to ...

It is much easier for a small animal to run uphill than for a large animal, because:

A

it is easier to carry a small body weight

B

samaller animals have a higher metabolic rate

C

smaller animals have a lower `O_(2)` requirement

D

the efficency of muscles in large animals is less than in the small animals

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The correct Answer is:
b
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