ECOLOGY
PROPERTIES OF POPULATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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demography
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immigration
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emigration
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death rate
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Detailed explanation-1: -Control in birth rate is not responsible for the population growth in India.
Detailed explanation-2: -When demographers attempt to forecast changes in the size of a population, they typically focus on four main factors: fertility rates, mortality rates (life expectancy), the initial age profile of the population (whether it is relatively old or relatively young to begin with) and migration.
Detailed explanation-3: -There are three components of change: births, deaths, and migration. The change in the population from births and deaths is often combined and referred to as natural increase or natural change. Populations grow or shrink depending on if they gain people faster than they lose them.
Detailed explanation-4: -The rapid increase in the number of people can cause population explosion. Four main factors which affect the rate of population are: Birth rate, death rate, immigration and emigration.