Overpopulation of humans is caused by lack of Birth Control, lack of education, and poverty.
Overpopulation in animals is caused by an abundance of food or the removal of predators or competitors.
There has been some research done that suggests the education of women lowers the Birth Rate. No one can explain why this happens. If the woman is taught to read even at a primary school level it still seems to lower the number of children she has. Education of women also improves the health of a community as the woman is usually the primary care giver, if she can read she can learn how to boil water, take correct doses of medicine, learn many useful skills.
Some of the main causes of underpopulation includes:
1. the inavalability of human resources.
2. increase Death Rate
3. increases Infant Mortality Rate
4. low levels of natural increase
5. low fertility rate
High cost of living and low infant mortality rates are the main causes of underpopulation in Singapore.
Underpopulation is usually when a countries' population has declined too much to support its current economic system. An underpopulated country can increase productivity by increasing its population.
if there is too less population then the natural population will increase and there might be an end to the human population.
There are some causes of cancer that you have no control over, such as genetics. There are causes which you can control such as smoking, drinking, and diet.
Over eating causes you to gain weight
over taxation
boredom
Kleptomania.
The cause is friction
It causes local weather changes.
what causes a Honda CRV to over heat
it failed to win over urban workers to its causes