Small birds must eat more frequently than large birds in order to maintain their body temperature.  This is because:

A. large birds are cold-blooded.
B. small birds are cold-blooded.
C. small birds have a lower surface area to volume ratio than large birds.
D. small birds have a higher surface area to volume ratio than large birds.


Answer: D

Biology & Microbiology

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The fastest land animal is the cheetah, which can run about 70mph. The fact that its main prey species, the Thomson's gazelles can run about 50 mph, which is also very fast, is likely the result of ____

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