involving permanent or temporary settlement. Since Homo erectus left Africa over a million years ago, the constant transfer of people between different countries has been continued. Because migration has a key human response to environmental, social, political, and economic changes (Hall, et al, 2010). Population dynamics happens over time and space on the population. The very reasons for the happening of change of population size, composition and distribution are migration, fertility, and mortality
experiencing one of the fastest urbanization in the world. This rapid urbanization is accompanied with both positive and negative impacts. Like other developing countries, urbanization of Ethiopia is also characterized by many socio-economic, environmental and political problems such as informal developments, poverty, unemployment, etc. Because of this urbanization of developing countries is considered as “urbanization without growth” contrary to urbanization of the developed countries. Related to
Population is defined as the number of individuals of the same species; therefore, population growth is the increase of those individuals. It is predicted that by 2050 the world population is to rise from 7.2 billion to 9.7 billion. Population growth could result as a consequence of immigration, lack of family planning, and more. Population has a great impact on the development of a country, for if a country has a high population, that means fewer resources will be available, which will make the
associated with a rapid population growth (Lambin, 2001). Land-use changes are known to have an impact on the hydrology of any basin (Fohrer et al., 2001). Research has been carried out to determine the causes and impacts of land-use changes on the surface hydrology. For instance, a study on the Pangani river basin in Tanzania, indicates that, deforestation and forest degradation are the main land-use change processes (IUCN,
By creating awareness and educating people about the link between human population growth and the environment, they can understand the seriousness of the situation we are currently facing. Everyone must be willing to take the step to make a difference. If everyone puts in a small amount of effort, it would seem less difficult and
Chapter 4: D The amount of vehicles in South Africa divided into all nine provinces we can therefore see that the Gauteng area are most populated with over two million cars already in 2010. This adds up to almost 40% of the total amount of cars in South Africa at that time. Figure 4.3: Drivers rated traffic in world cities from 1 to 100 In this graph we can see that traffic in Johannesburg are rated as the third worst city by drivers with Beijing and Mexico City being the worst. 10. Does
experiencing the largest swell of urban growth in history. More than half of the world 's population now lives in cities and towns, and by 2030 this number will increase to about 5 billion. A big part of this urbanization will unfold in Asia and Africa, bringing huge environmental, economic, and social transformations (UNFPA). Urbanization is accompanied by a number of challenges resulting from the concentration of population in major cities; environmental degradation has happened very quickly, resulting
86). The overpopulation situation also tends to lead to environmental problems with making too much energy and killing the environment. Countries with overpopulation tend to have a lot of governmental problems because the countries try to stretch too far for its own good. Another problem that can occur is food and water shortage, and sometimes countries cannot provide that for their country. The ever-looming threat of overpopulation can cause a worse environment, deplete the resources of smaller governments
86). The overpopulation situation also tends to lead to environmental problems with making too much energy and killing the environment. Countries with overpopulation tend to have a lot of governmental problems because the countries try to stretch too far for its own good. Another problem that can occur is food and water shortage, and sometimes countries cannot provide that for their country. The ever-looming threat of overpopulation can cause a worse environment, deplete the resources of smaller governments
world is undergoing the largest wave of urban growth in history. More than half of the world’s population now lives in towns and cities, and by 2030 this number will swell to about 5 billion. Much of this urbanization will unfold in Africa and Asia, bringing huge social, economic and environmental transformations (UNFPA) [1]. Urbanization is accompanied by a number of challenges arising from population concentration in metropolitan cities; environmental degradation has occurred very rapidly and causing