Describe predictions about global population growth.

2 answers:

7 0

I don't believe that global population growth means that it will eventually oustrip the ability of the countries to provide for the extra people. While climate change and global warming are alarming and threatening our water resources for example, I believe that with the right social system that more and more people are demanding including in the US the past despoiliation of the earth by profit hungry corporations this behaviour can become a thing of the past if enough people oppose it.

kompoz [17]3 years ago

3 0

The global population will increase significantly in the future, creating many megacities predominantly in Asian countries. Population growth is significant in LICs especially in Africa, Asia and South America.

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Wikipedia

Three-sector model

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This article includes a list of general references, but it remains largely unverified because it lacks sufficient corresponding inline citations. (August 2008)

The three-sector model in economics divides economies into three sectors of activity: extraction of raw materials (primary), manufacturing (secondary), and service industries which exist to facilitate the transport, distribution and sale of goods produced in the secondary sector (tertiary).[1] The model was developed by Allan Fisher,[2][3][4] Colin Clark,[5] and Jean Fourastié[6] in the first half of the 20th century, and is a representation of an industrial economy. It has been criticised as inappropriate as a representation of the economy in the 21st century.[7]

Industrial output in 2005

Service output in 2005

According to the three-sector model, the main focus of an economy's activity shifts from the primary, through the secondary and finally to the tertiary sector. Countries with a low per capita income are in an early state of development; the main part of their national income is achieved through production in the primary sector. Countries in a more advanced state of development, with a medium national income, generate their income mostly in the secondary sector. In highly developed countries with a high income, the tertiary sector dominates the total output of the economy.

The rise of the post-industrial economy in which an increasing proportion of economic activity is not directly related to physical goods has led some economists to expand the model by adding a fourth quaternary or fifth quinary sectors, while others have ceased to use the model.

Structural transformation according to Fourastié

Extensions to the three-sector model

Value added, national accounts and the three sector model