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MHT CET Biology question

BiologyOrganisms and PopulationsMHT CET

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

Answer: (D)

Solution

Net change = (natality + immigration) - (mortality + emigration) = (250 + 20) - (240

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Question ID VK-082886