Reasons for the expected population growth include increase in the number of young unmarried mothers, high fertility rates for some ethnic groups, and inadequate sexual education and birth control provision.

A larger population, in itself, creates demands for education, health, transport and general services that generates jobs, tax revenues and enhanced economic activity.

Three factors that contribute to high population growth rates are the lack of education, decreasing death rates, and a lack of access to healthcare.

The Causes of Overpopulation

• Falling Mortality Rate. The primary (and perhaps most obvious) cause of population growth is an imbalance between births and deaths.
• Underutilized Contraception.
• Lack of Female Education.
• Ecological Degradation.
• Increased Conflicts.
• Higher Risk of Disasters and Pandemics.

Causes. A reduction over time in a region’s population can be caused by sudden adverse events such as outbursts of infectious disease, famine, and war or by long-term trends, for example sub-replacement fertility, persistently low birth rates, high mortality rates, and continued emigration.

One of the largest environmental effects of human population growth is the problem of global warming. Some scientists fear that global warming will lead to rising sea levels and extreme weather conditions in the future. In order to support the growing population, forests are being destroyed at an alarming rate.

As the human population continues to grow, different factors limit population in different parts of the world. What might be a limiting factor for human population in a particular location? Space, clean air, clean water, and food to feed everyone are limiting in some locations.

around 1.9 billion people