Rapid population growth is the sudden change and increase as a whole in the world's population. The world's population is currently around 5 billion people. However recent statistics have shown that the world's population will increase to 9 billion by 2050 which is an increase of 4 billion people. The addition of 4 billion people will degrade and overwhelm the earth's biophysical environment, lands, food producing capacity and other natural resources on which all life depends.

People need to live in areas with food, water, work and fertile lands. With an increase in population, this means that there would be a greater population density and therefore more people relying on the same area to meet their needs. Tanzania has a population of 78% with often 10 people per a family. The demand for food, lands, work and water are often not met due to overcrowding and lack...