Environment

What is the demographic transition?

The demographic transition model literally means population change model. This very reclaimable model shows how dynamic population is.

Currently there atomic number 18 4 stages in demographic transition, although there are round countries are entering the stage 5.

Stage 1: scarcely a few of the poorest countries of the world are still at this stage when birth and death rates are high. They too fluctuate leading to a small growth or decline in the total population. There are many another(prenominal) reasons for this:
Little access to birth control
Because many children die in infancy (infant morality), family tend have more children to compensate in hope that some will survive.
Children are needed to flirt on the land to grow food for the family
Children are seen as a sign of virility in some cultures
religious beliefs (e.g. Roman Catholics, and Hindus) encourage large families
Death rates, especially among children are high because of famine, diseases, poor diet and hygiene, and little access to medical science
E.g. Niger in Africa is more common country for this stage

Stage 2: this is the stage of mots population growth; birth rates go on high but death rates fall quickly causing high population growth. Many less genuine countries (LDCs) are at this stage.



Reason for this could be
Improvements in medical care
Improvements in sanitation and water supply
The quality and quantity of food improves
enrapture and communications improve the movements of food and medical supplies
Decrease in infant mortality
E.g. Sri Lanka and Bolivia are still at this stage

Stage 3: Death rates now fall rapidly spell death rates continue to fall. The total population append slows. Many of the newly developed countries are in this stage. For example, Argentina, and Peru are at this stage.
The reasons for this could be

Increased access to contraception,
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