4. All of the following are true of physiological density EXCEPT (A) Unlike arithmetic density, physiological density calculates number of people per unit of farmland.
(B) Countries like Iraq, Egypt, and Uzbekistan have high physiological densities because the amount of arable land is low.
(C) Physiological density helps illustrate why in the United States populations have moved to urban areas and into the western part of
the country
(D) Physiologic density is useful in determining the sustainability of a population in each region
I
(E) A country with a high physiologic density must also have a high arithmetic density
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