reasons for population growth information
Answers
Answer:Every two years, the United Nations makes projections for future population growth. In 2017, its main, "median" projection was a population of 9.7bn in 2050 and 10.9bn in 2100. Because many factors affect population growth, it makes a range of projections depending on different assumptions. Within its 95% certainty range, the difference in population in 2100 from the highest to lowest projection is almost 4bn people - more than half the population we have today.
The second graph above shows the UN's projected population if, on average, there was half-a-child less or half-a-child more per family than in the median projection.
This shows the enormous difference in total numbers that arise from just very small variations in family size. If we can achieve that modest reduction in number of children born, we will have more than 3bn people fewer by 2100 - a lower population than we have today.
Explanation:
Answer:
Explanation:
Poverty
Poverty is believed to be the leading cause of overpopulation. A lack of educational resources, coupled with high death rates leading to higher birth rates, result in impoverished areas seeing large booms in population.
The effect is so extensive that the UN has predicted that the forty-eight poorest countries in the world are also likely to be the biggest contributors to population growth. Their estimates state that the combined population of these countries is likely to balloon to 1.7 billion in 2050, from 850 million in 2010.
Poor Contraceptive Use
Though the availability of contraceptives is widespread in developed countries, poor planning on both partners’ parts can lead to unexpected pregnancies. Statistics have shown that in Great Britain 76% of women aged between 16 and 49 used at least one form of contraceptive, leaving a quarter open to unexpected pregnancies.
This issue is exacerbated in underdeveloped areas. A study by the World Health Organization (WHO) shows that this usage figure drops to 43% in countries that are blighted by issues like poverty, which leads to higher birth rates.
Child Labor
As distressing as it may be to hear, child labor is still used extensively in many parts of the world. UNICEF estimates that approximately 150 million children are currently working, primarily in countries that have few child labor laws.
This can result in children being seen as a source of income by impoverished families. Furthermore, children who begin work too young also lose the educational opportunities they should be granted, particularly when it comes to birth control.
Reduced Mortality Rates
Improvement in medical technology has led to lower mortality rates for many serious diseases. Particularly dangerous viruses and ailments such as polio, smallpox and measles have been practically eradicated by such advances.
While this is positive news in many ways, it also means that people are living longer than ever before. This “delay” in the cycle of life and death has led to birth rates outstripping death rates by over two to one in modern times.
Fertility Treatment
Though it only plays a minor role in comparison to the other causes of overpopulation, improved fertility treatments have made it possible for more people to have children.
The number of women using various fertility treatments has been on the rise since their inception. Now most have the option of conceiving children, even if they may not have been able to do so without such treatments.
Immigration
Unchecked immigration into countries may lead to overpopulation to the point where those countries no longer have the required resources for their population. This is particularly problematic in countries where immigration numbers far exceed emigration numbers.
In some cases, immigrants may be attempting to escape overpopulation in their own countries, only to contribute to the same issues in the countries they move to. However, data also exists to show the immigration can bolster economies, with the effect in the UK being particularly pronounced.