SAT Subject Biology Practice Question 234: Answer and Explanation

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Question: 234

4. At which time point in the graph below does the size of the population reach the carrying capacity for the ecosystem?

A. 3
B. 4
C. 6
D. 9
E. 12

Correct Answer: E


When a population reaches the carrying capacity of its ecosystem, its growth curve levels off, and the population size no longer increases. This occurs at time point 12.

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