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A biologist studied the population of rats in a barn. The bound that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in population is ______. -

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Question

A biologist studied the population of rats in a barn. The bound that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in population is ______.

Options

  • 15

  • 05

  • zero

  • 10

MCQ
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Solution

A biologist studied the population of rats in a barn. The bound that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in population is zero.

Explanation:

Net increase in population (Natality + immigration) - (mortality + emigration)

= (250 + 20) - (240 + 30)

= 270 - 270

= 0

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