Human population has been increasing almost constantly throughout human history. At around 10,000BC human population was estimated at around 10 million. By 1000BC human population was 50 million, by 600AD human population was 200 million. During the beginning of the 20th century human population was 1.5 billion. The way population growth works is with exponential growth was each increase in population creates more people to reproduce and who create even more people (Grabianowski 3). Though with more population, it would also create more complications. The complications with population growth would include finding open space and environmental problems (Wenner 1). To predict how much population growth would happen, there are many mathematical models showing predictions on how much human population may grow.
With an ever growing human population there are many problems created. Some of the problems created were environmental and overcrowding. Several environmental problems created with population growth include global warming, straining finite resources, deforestation, and extinction of other species. With overcrowding there would be limited living space as there are more people taking up more living space then there would have been taken up with less people (Wenner 1). Another problem with overcrowding is that there is a higher chance of diseases that are transferred more easily then in less crowded places (green 1). One of the environmental problems of population growth is global warming were with more population there are more harmful gasses such as CO2 released into the atmosphere as more people are using more resources (Wenner 1). Another environmental problem of population growth is that with a larger population there’s more of a strain on the earth’s finite resources like water and food. Some fear that in the coming years half of the world’s population might even have conditions like water stress or water scarcity (Earth Talk 1). Although some countries which have more population they aren’t always as harmful to the environment then countries with less population like for example, India which produces 5 percent of the world’s CO2 emissions, but compared to the U.S which has 4 to 5 times less population than India, but produces 27.5 percent of the world’s CO2 emissions (Wenner 1). Deforestation and extinction of species is also another problem of population growth. Since 1950, 80 percent of the clearing of rainforests have been the cause of human population growth. Tens of thousands of animal and plant species’ extinction has also been the cause of human population growth (Earth talk 1). There are also many different causes to the substantial increase in human population. One cause of the increase in human population was the decrease in human death rate. The decrease in the death came with the availability of antibiotics, clean water, immunizations, and increase in food production (world population causes of growth 1). Another reason with the increase in human population is that in less developed countries there is a lack of birth control as well as cultural traditions which have women stay at home and have babies (Earth Talk 1). Although overall world human populations have increased there are also places in the world that are losing population or are not gaining any. The reason for the population loss in some countries is birth control which had been introduced to women in the 1960s and is steadily lowering birth rates in industrialized countries (Grabianowski 5). With the growing populations and problems that are associated with an increasing population there are a couple of models used to show when the population might double and the rate of increase in a population. The basic equation used to derive some other forms in measuring how population grows is log(n/n0) = rt. In the formula n0 represents the initial population while n represents the future population and r represents the rate of population...
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