-Developement of medical knowledge
- Better access to water and food suplies.
- Spread of knowledge about a good lifestyle.
Reasons for
high death rates
They are compex and
can change rapidly
Diseases
In some cases, bad health
and nutrition.
War and natural disasters
(results for a limited time)
Reasons for high
birth rates
Economic
- In LEDCs, people have children to provide
the labour for the family's farm
- In many countriespeople hve no ability to read
and don't have information about contraceptives.
- In por countries, people ensure that some of their
children reach adulthood.
Demographic
Countries with a high quantity of women
tend to have more children
Religious
In some religions, such as Catholic,
Hindu and Mulism, people encourage
to have children.
Cultural and Social
- Big number of children
in some societies
- Desire for a son to carry
on the family name.
- Some people children to be
looked after whn they grow old.
- Polygamous societies
- In some societies, girls have children
at a young age.
