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NEET Biology question

BiologyOrganisms and PopulationsNEET

The birth and death rates (per 1000 per year) of four countries are given below. Which one will have the least population growth rate? Country M: Birth 15, Death 5; Country N: Birth 25, Death 10; Country O: Birth 35, Death 18; Country P: Birth 48, Death 41.

Answer: (A)

Solution

Population growth rate is proportional to (birth rate − death rate): for M this is 15−5=10, for N it is 25−10=15, for O it is 35−18=17, and for P it is 48−41=7; since

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Question ID VK-126253