A discussion about world population and reasons for the high rate of increase

Around 2.

causes of rapid population growth

In order to keep a working population that can support its elderly, Japan would need 17 million new immigrants byaccording to a recent United Nations report.

The decline in French births began late in the 18th century and the downward courses of the birth and death rates during the 19th century were more or less parallel.

Causes of population explosion

The combined impact is a slight decrease in Jewish fertility, globally. The increased use of fossil fuels has a negative effect on the health of the environment in terms of air and water pollution. According to one estimate, about 42 percent of the U. Declining mortality, not rising fertility, has been the cause of the accelerating pace of world population growth. The majority of migrants to the United States in the past years were European. Christians 2. One way to see the impact of fertility differences on population projections is to apply an alternative set of assumptions, such as assigning all religious groups within each country the same rate. One important characteristic is rapid growth, which is the immediate consequence of the large and often growing difference between birth and death rates; the other is the heavy burden of child dependency which results from a high birth rate whether death rates are high or low. The average age at marriage rose to 28 and more than a fourth of Irish women remained unmarried at age

The fossil fuels include oil, coal, and natural gas and account for about 90 percent of all the energy consumed in the world. These hypothetical scenarios are intended to give readers a sense of how much impact various factors have on the projections. For example, a net inflow of 1 million Muslims is projected to occur in Europe between and A higher share of young people who are alive today in Europe and North America are likely to be alive in compared with those residing in sub-Saharan Africa and the Asia-Pacific region.

In other countries, however, such social changes have had either insignificant or favorable effects on the birth rate.

A discussion about world population and reasons for the high rate of increase

The alternative is natural population growth control by mass starvation or disease, or control by crime and war. There is however still a major pollution problem for the government and the people of Thailand to deal with. If one were to artificially assume that within each country, all religious groups shared the same fertility rate, Muslims would still be the fastest-growing major religious group worldwide, and the religious composition of the world in would look very similar to how it appears in the main projection scenario. But there is a more immediate problem demanding solution in much less than two centuries: Is the current demographic situation in the less-developed countries impeding the process of modernization itself? With declining mortality and high fertility rates, the population growth of the less developed countries achieved an unparalleled 2. Since , both birth and death rates in the more developed countries have continued to fall in tandem, with a few interruptions. Iran — After the Islamic Revolution in the Iranian population rapidly grew, from 34 million to 63 million in just 20 years. China is home to at least half of all Buddhists, adherents of folk religions and religiously unaffiliated people in the world. Next, the mechanisms behind unprecedented population growth are explained and plausible scenarios for future developments are discussed. Three plausible projections published by the United Nations in lead to outcomes ranging from 7. One may surmise that the birth rate responds more slowly because its reduction requires changes in more deeply seated customs. About half are attributable to the top four causes: cancer, respiratory infections, heart disease, and accidents. For example, as noted above, the Christian fertility rate in Nigeria is 4. The European population is now thought to decline in the future, because of a decreasing average number of children per family.

This is pre-emptive of the moment in history when the population stops increasing. By the year this number had grown to million. Children leave home to seek jobs and parents no longer count on support by their children in their old age.

population explosion wikipedia

Reasons for the expected population growth include increase in the number of young unmarried mothers, high fertility rates for some ethnic groups, and inadequate sexual education and birth control provision.

Click to open interactive version When will population growth end?

Population growth problems

Nobody expects such a growth to actually occur. Finally, the social and economic changes characteristic of industrialization and modernization of a country are accompanied by and reinforce a rise of secularism, pragmatism, and rationalism in place of custom and tradition. Similarly, Buddhists, adherents of folk religions and religiously unaffiliated people are expected to experience a similar initial decline or plateau in their fertility rates, followed by a subsequent increase, as shown in this chart above. The difference between births and deaths in a population produces the natural increase or decrease of a population. A few countries in the Asia-Pacific region are likely to experience religious change due to immigration. But how is this growth distributed across the world? Within a single religious group, fertility rates can vary enormously depending on where people live. Growth is usually thought of as a linear process: an increase by a constant amount over a period of time. In the United States, for example, one can scarcely imagine that married couples have forgotten how to employ the contraceptive Page 14 Share Cite Suggested Citation:"World Population Problems. Most commonly cited as life expectancy at birth. This is shown in the charts below: we see the annual number of births by world region from to ; and the annual number of deaths over the same period.

A: World population will stop growing when the birth rate equals the death rate; no one knows whether this will happen.

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Human Population: Lesson Plans