First slide

Populations

Question

As a population showing logistic growth approaches carrying capacity,

Moderate

A

the ratio of natality to mortality increases
B

competition for resources increases
C

the growth rate of the population attains a maximum
D

the ratio of natality to mortality becomes zero

Solution

When a population is approaching the limit of its resources, the competition for those resources increases, slowing down the growth of the population. At carrying capacity, natality equals mortality. So, the ratio of natality to mortality becomes one.

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