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

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0(zero)

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Solution

The correct option is B 0(zero)
Net increase in population = (average natality + immigration) - (averagemortality + emigration)

= (250 + 20) - (240 + 30)
= 270 - 270 = 0

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

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A biologist studies 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

Q. Biologist studied the population of rats in a barn initially the number of rate were 200 now 15 new rats were born and average mortality was 20. So, what will be the final population?

Q. A biologist studied the population of rats in a barn. Initially the number of rats were

200

. Now

15

new rats were born and mortality was

20

. So, what will be the final population?

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

The correct option is B 0(zero)Net increase in population = (average natality + immigration) - (averagemortality + emigration) = (250 + 20) - (240 + 30) = 270 - 270 = 0

The correct option is B 0(zero)
Net increase in population = (average natality + immigration) - (averagemortality + emigration)

= (250 + 20) - (240 + 30)
= 270 - 270 = 0