4
practice examMultiple Choice

Practice Exam

Question 4 • Biology

A muskrat population is growing exponentially. What might cause this population to enter logistic growth?

Answer
A
carrying capacity is increased
B
resources become scarce
C
birth rate increases
D
emigration decreases

Explanation

Exponential growth can continue when resources are abundant, but limited resources slow population growth as the population gets larger. This causes the population to approach the environment’s carrying capacity, which is characteristic of logistic growth. Therefore, resources becoming scarce is the correct choice.

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