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Transcript of Population Growth
Abrahim Iqbal and Alizeh Ali
What is Population growth?
Population growth is the increase in the number of people. Rapid growth in population has become a global problem.The population growth has been extremely rapid in the last 50 years.There are now over 7 billion people living on earth.The world population is growing by about 0.8 percent or almost 80 million people,per year.Every second 4.3 people are born worldwide while every second 1.8 deaths occur.
Effects of Population Growth
The effects of population growth can be both positive and negative.Some effects of population growth are:
More population produces more goods and services and innovative technology.
Access to food and clean water can become difficult and cause famine.
More population increases the environmental pollution by cutting trees for their survival and housing.
If the population is higher then it will become harder to get a job.
More fossil fuels and other non renewable resources might be used.
Causes of Population Growth
Some causes of population growth are:
New advancements in medicine have been invented so their are less deaths than 50 years ago.
Illiteracy causes uneducated parents to have lots of children to work and support their family.
Migration results in population changes in different regions.
Improvements in food production have made food healthier and has led to lower death rates.
In rural areas and also some countries, marriages take place usually between 15 to 25 years of age and due to this the duration for reproduction becomes longer.
These maps show that world population distribution is uneven. Some areas have a high population density while others have a low population density. There are a variety of factors that effect population distribution.Some factors that effect population distribution are:
Relief: It is the shape and height of land.Areas which are flat are highly populated than areas that are mountainous.
Resources: Areas rich in resources are highly populated where as areas with few resources are lightly populated.
Climate: People prefer living in areas with temperate climates and avoid living in areas with extreme climates of hot and cold. .
Economic and Political:
Good job opportunities cause an area to have high population where as limited job opportunities cause some areas to be lightly populated.Countries with stable government have high population where as countries with unstable government have fewer population.
Causes and Effects of Population growth
Population distribution is the spread of people throughout the world or over a given geographical area.