It is much easier for a small animal to run uphill
than for a large animal, because
(a) small animals have a lower O2 requirement
(b) the efficiency of muscles in large animals is less
than in the small animals
(c) it is easier to carry a small body weight
(d) smaller animals have a higher metabolic rate.

1 Answer

Answer :

(d) smaller animals have a higher metabolic rate.

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