Which term describes a field where there are 20 moles per acre? A. population size B. population energy level C. population vigor D. population density

The correct answer as to which term describes a field where there are 20 moles per acre would be the population density. The correct answer is D.

Population density is defined as the number of individual of a particular species per unit area.
Population density is as opposed to population size. The latter refers to the number of individuals in a population without any reference to the area they occupy.

Going by the definition, 20 moles per acre refers to the population density because both the number of individuals and the area of space they occupied were captured.

More on population density can be found here: https://brainly.com/question/16894337