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9 April, 17:15

Calculate the population. There is a flock

of 21 birds. 3 birds immigrate to the flock

but 9 emigrate.

A. Population grows; 15 birds in

the end

B. Population grows, 27 birds in

the end

C. Population shrinks; 15 birds in

the end

D. Population shrinks; 27 birds in

the end

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Answers (1)
  1. 9 April, 19:42
    0
    C. Population shrinks; 15 birds in the end

    Explanation:

    Let us understand some of the given terms;

    immigration is a form of migration in which organisms comes into a territory.

    emigration is a form of migration in which organisms leaves a place

    population is a group of organisms of the same species

    Given:

    Population = 21 birds

    Immigrant = 3 birds

    Emigrants = 9 birds

    Population change = total number of birds + immigrant - emigrants

    = 21 + 3 - 9

    = 15 birds

    The population will shrink giving 15 birds in the end
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