a) Population Growth
Many of the problems associated with underdevelopment in the world are linked to high population growth rates. For every minute that passes 300 babies are born in the world and 132 people die. This means that in the last minute 168 new people were added to the world's population. When you work out his figure for days, months and years, you will find that an additional quarter of a million people are added to the world's population every day and about 90 million people are added to the world each year. (these figures were true for 1996, they will be higher now)
If the worlds' population continues to grow at this rate, it is unlikely that there will be enough food, water and living space for all of us in the future. Unmanaged population growth can lead to disaster for the world. Apart from food shortages, population growth also puts incredible additional pressure on the environment in the form of pollution, deforestation and the use of natural resources like water and coal. Population growth has been far higher in the developing world than in the developed world, so that countries that are already struggling to look after large percentages of poor people are having a rapid increase in population.
We can calculate the growth rate by saying birth rate minus death rate = growth rate. These rates are usually measured as the number per thousand of the population, so if your birth rate is 20 babies per 1 000 of the population every year, and the death rate is 10 people per 1 000 of the population every year, then your growth rate is 10 people per 1 000. That is the same as one per hundred so that we could say there has been a one percent population growth.
Emigration and immigration also have an effect on the population growth rate. The population grows when people move into your country and shrinks when people leave your country.
Most of the developed countries or industrialised countries have low growth rates. Some European countries even have negative growth rates - more people are dying every year than being born and their populations are getting smaller.
Countries in the developing world are those with the fastest growing populations. In most developing countries the death rates are falling because of improved medicine and improved hygiene but birth rates remain high. In these countries a high percentage of the population is below 15 years old.
a) Population GrowthMany of the problems associated with underdevelopment in the world are linked to high population growth rates. For every minute that passes 300 babies are born in the world and 132 people die. This means that in the last minute 168 new people were added to the world's population. When you work out his figure for days, months and years, you will find that an additional quarter of a million people are added to the world's population every day and about 90 million people are added to the world each year. (these figures were true for 1996, they will be higher now)If the worlds' population continues to grow at this rate, it is unlikely that there will be enough food, water and living space for all of us in the future. Unmanaged population growth can lead to disaster for the world. Apart from food shortages, population growth also puts incredible additional pressure on the environment in the form of pollution, deforestation and the use of natural resources like water and coal. Population growth has been far higher in the developing world than in the developed world, so that countries that are already struggling to look after large percentages of poor people are having a rapid increase in population.We can calculate the growth rate by saying birth rate minus death rate = growth rate. These rates are usually measured as the number per thousand of the population, so if your birth rate is 20 babies per 1 000 of the population every year, and the death rate is 10 people per 1 000 of the population every year, then your growth rate is 10 people per 1 000. That is the same as one per hundred so that we could say there has been a one percent population growth.
Emigration and immigration also have an effect on the population growth rate. The population grows when people move into your country and shrinks when people leave your country.
Most of the developed countries or industrialised countries have low growth rates. Some European countries even have negative growth rates - more people are dying every year than being born and their populations are getting smaller.
Countries in the developing world are those with the fastest growing populations. In most developing countries the death rates are falling because of improved medicine and improved hygiene but birth rates remain high. In these countries a high percentage of the population is below 15 years old.
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