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NEET Sample Paper NEET Sample Test Paper-25

  • question_answer
    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

    Correct Answer: D

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