The human population is one of the most fast growing and dispersive populations on the planet. However, 200,000 years ago there were not many Homo sapiens. This is because the human population grows exponentially. Our transition into such an inflluential species can be described by demographic transition, which has four stages. Depending on the wealth and power of a nation, countries can be categorized by which stage they are in.
Demographic Transition: Changes in population that occurred in Europe and North America around the 18th century.
Homo sapiens, the scientific name for humans, were the first nomadic hunters and gatherers that arose about 200,000 years ago in Africa.
The demographic transition describes major changes in human population. Demographic transition can be described in in four stages.
These major changes in human population growth began in the 18th century in Europe and North America. Death rates first fell, followed by birth rates.
All countries have passed through stage 1 of demographic transition.
Many undeveloped and poor nations are stuck in stage 2 of demographic transition, where there is a high birth rate.
Third world countries are those generally stuck in stage 3 of demographic transition, where the birth rates are decreasing.
Most developed nations are in stage 4. Belgium is an example of a country in stage 4 because their birth rates have been low for a long period of time. Therefore, the rate of population growth is reaching zero.
In some countries, birth rates have dropped even lower than death rates, forming the new Stage 5 in demographic transitions. This causes the population growth to become negative.
It has been predicted that by 2050, there will be 9 billion people on planet earth.