Which of the three cells, if any, has the greatest surface-area-to-volume ratio?
a. the cell with radius 1
b. the cell with radius 2
c. the cell with radius 3
d. All three cells have the same surface-area-to-volume ratio.

a.

Explanation:

The smaller the cell, the better the surface area-to-volume ratio is.  The r=1 cell has a 3:1 ratio (which you can find by dividing the surface area by the volume); the r=2 cell has a 3:2 ratio, and the r=3 cell has a 1:1 ratio.

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hi, natural selection of the peppered moth during the industrial revolution in 19th-century england is an example of an outlier in the study of evolution. during this time, pollution from factories filled the forests, coating trees in a layer of soot—turning white trees black

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