The size of population keeps on changing. It increases or decreases according to time and space. The major factors affecting population are birth, death and migration. Birth increases the population while death decreases the population. Migration also causes population change. Internal migration does not make any changes but international migration makes the differences in the size of population. But as a whole, migration does not effect in the size of population change.
Birth and death are considered as the natural factors of population but migration is considered to be an artificial effecting factor of population change.
The birth is a chief natural factor affecting the population change. It results into the increase of population. Higher birth rate, quicker the population growth. The following are the prominent factors which plays an important role in increasing population, they are:
Death is an important natural cause to bring change in population. It decreases the population of a country. Reduction in death rate automatically brings down the birth rate. The main reason for the decrease in death rate in Nepal is the decrease in the infant and child rate. The following are the factors responsible for the death they are:
List the major factor responsible for population growth.
The major factor responsible for population growth are as follow:
What happens if forests are destroyed?
If forests are destroyed global warming would increase.
How does population decrease due to the lack of education? Explain with examples.
Due to lack of proper knowledge of child care, infant and child rate are increasing in Nepal. It is because of illiteracy, people go to seek the treatment from witch doctor instead of visiting doctors for medical treatment. They believe in superstition. They also die due to simple diseases because of their superstitious believe.
What are the causes of decreasing population?
The causes of decreasing populationare :
How does population decrease due to natural calamities?
Natural calamities like landslide, earthquake, floods, and fire can destroy our life and property.
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