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A biologist studied the population of rats in a barn. He found
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Solving time: 5 mins

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

A
10

B
15

C
05

D
Zero

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Updated on: Feb 9, 2024

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A biologist studied the population of rats in a barn. He found that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in population is:
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Net increase in population can be calculated by a formula: (B+I) - (D+E) where in B refers to Birth rate/Natality, I refers to Immigration, D refers to Death rate/Mortality and E refers to Emigration. Therefore net increase for the population of rats in barn is (250+20) - (240+30), thereby 270-270=0
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Question Text
A biologist studied the population of rats in a barn. He found that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in population is:
Updated OnFeb 9, 2024
TopicOrganisms and Populations
SubjectBiology
ClassClass 12
Answer TypeText solution:1 Video solution: 10
Upvotes1036
Avg. Video Duration3 min