Discussion
Physiological/Nutritional density is calculated as :
Answer: B
Physiological density is the number of people per square unit of farm land.
Arithmetic density divides the population by the total area, which hides how much of the land can actually feed people. Physiological (nutritional) density divides the population by the area of cultivable land instead, so it shows the pressure of population on the land that produces food. Egypt, for example, has a modest arithmetic density but a very high physiological density.
People per unit of total land is arithmetic density, and farmers per unit of farm land is agricultural density. Carrying capacity is the population an area can support, a different concept.
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