2
QuizMultiple Choice

Human Impact on the Environment — Cumulative exam

Question 2 • SC332 Environmental Science B

Which best describes what is occurring in this population of squirrels?Number of Squirrels Entering and Leaving a Population after 1 YearCause of changeNumber of squirrelsDied from predation2Born4Immigration10Left to find food3Died from disease8Left to find a mate3

Answer
A
Population growth is decreasing.
B
Population growth is increasing.
C
Population growth stays the same.
D
Population reaches carrying capacity.

Explanation

The population gains 14 squirrels: 4 are born and 10 immigrate. It loses 16 squirrels: 2 die from predation, 8 die from disease, and 6 leave. Since losses exceed gains by 2 squirrels, the population is shrinking, so population growth is decreasing.

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