Question

explain any three factors that cause change in size of population.

Answer 1

1.Migration
2.Reproduction
3.Mortality and birth

Answer 2

$\huge \bf {\underline { \underline\red{ANSWER - }}}$

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$\implies$The birth rate and the death rate are two factors that influence population change.

1. The birth rate isthe number of live births per 1000

people while the death rate isthe number of deaths per 1000 people.

2. These are the natural causes of population change.

3. When the birth rate is higher than the death rate, population increases.

4. When the death rate is more than the birth rate, population decreases. When the two rates are equal, the population remains constant. Thus, the birth and death rates affect the balance of population.

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