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A biologist studies a population of rats. Natality = 250, Mortality = 240, Immigration = 20, Emigration = 30. The net increase in population is:

  1. A
    10
  2. B
    15
  3. C
    05
  4. D
    Zero

Solution & Step-by-step Explanation

Population change is calculated as:



There is no net change in the population size.

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A biologist studies a population of rats. Natality = 250, Mortality = 240, Immigration = 20, Emigration = 30. The net increase in population is:
A
10
B
15
C
05
D
Zero

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