Population change

Created by: Claudia Bannatyne
Created on: 15-05-14 10:01


	Population change
	Causes Improvement in healthcare - longevity increased therefore people living for longer. Industrialisation: the need for a labour force, the ability to have children as a result of having access to an income that allows it. A lack of contraception - socially unacceptable or for religious reasons. The need for children for physical labour Initially there was high infant/child mortality but as healthcare improve this decreased, but number of children had has not necessarily decreased yet.	Effects Overcrowding = high land prices, cost of living is increased Congestion Demands for resources are increased - shortages, famine etc. Pollution - air pollution, noise pollution, water pollution Population doubled between 1650-1850, 1850-1920 and 1920-1970. Approx. three babies born per second.
	Overall summary LEDCs and MEDCs contrast greatly in rates of growth - However, in the last century our population has trebled that of 60 years ago with population growing exponentially. Many LEDCs continue to have very high birth rates as a result of a lack of contraception, the need for manual labour, high infant mortality rates and the prestige or reputation that having many children gives for the father of a family. MEDCs in contrast, have begun to experience decreases in the rate of growth of their population with increasing costs of living as a result of increased demand for all resources include food and land prices. The current world population is approx. 7 bn.

Population change

Causes

Improvement in healthcare - longevity increased therefore people living for longer.
Industrialisation: the need for a labour force, the ability to have children as a result of having access to an income that allows it.
A lack of contraception - socially unacceptable or for religious reasons.
The need for children for physical labour
Initially there was high infant/child mortality but as healthcare improve this decreased, but number of children had has not necessarily decreased yet.

Effects

Overcrowding = high land prices, cost of living is increased
Congestion
Demands for resources are increased - shortages, famine etc.
Pollution - air pollution, noise pollution, water pollution
Population doubled between 1650-1850, 1850-1920 and 1920-1970.
Approx. three babies born per second.

Overall summary

LEDCs and MEDCs contrast greatly in rates of growth - However, in the last century our population has trebled that of 60 years ago with population growing exponentially. Many LEDCs continue to have very high birth rates as a result of a lack of contraception, the need for manual labour, high infant mortality rates and the prestige or reputation that having many children gives for the father of a family. MEDCs in contrast, have begun to experience decreases in the rate of growth of their population with increasing costs of living as a result of increased demand for all resources include food and land prices. The current world population is approx. 7 bn.

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Population change