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.

Biology

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29/10/2021 4:18 pm

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BidishaKashayap1333

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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

(1) zero

(2) 15

(3) 10

(4) 05

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29/10/2021 4:18 pm

Mayank1444

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Correct answer: (1) zero

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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.

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