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larisa86 [58]
3 years ago
14

What is a population pyramind?

Geography
1 answer:
ANTONII [103]3 years ago
3 0

Answer:

The population pyramid is a graphical depiction of age and sex structure of population in a certain region ( usually state).

Explanation:

Pyramid is not the most adequate term since it`s two-dimensional and has a shape of a triangle. Left side of this triangle represents males and the right side females. This pyramid is presented with a set of bars which are pilled one on another. The bars are longer on the base and shorter on the top, hence the shape of a triangle. Each bar represents a certain age range. The lowest bar represents the range from 0 to 4 years. The one above from 5 to 9 years, the next from 10 to 14 years and so on. The length of a bar represents the number or the percentage of that range in the given population.

The pyramid population is regarded as one of the best ways to visualize age structure in both sexes.

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Which sector of the economy activity rapidly in both developed and developing countries?
devlian [24]

Explanation:

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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

See also

References

Further reading

Last edited 27 days ago by 2A00:1D40:1004:138:B2A:8E62:DB65:B77B

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7 0
3 years ago
What are four pieces of evidence for continental drift?
Alexus [3.1K]

Answer:

- Shape of the continents

- Fossils of the same species found on continents that are not connected

- Evidence of ice sheets in places that are hot in the present

- Mid-ocean ridges

Explanation:

The continental drift theory is a theory that suggests that the continents are always on the move, thus they change their shape, location, collide with each other, move away from each other etc.

The shape of South America and Africa is one of the evidences. If the shapes of the continents are taken out of a map, and the eastern coast of South America and western coast of Africa are merged, they fit in perfectly.

There are numerous fossils of the same species of animals and plants that have been found all over the world, even though the continents are isolated and separated by water bodies.

In some places that are very hot in the presence, like South Africa, have evidence of ice sheets. In the current conditions that is simply not possible considering that the temperature in this part of the world goes well over 40 C degrees.

The mid-ocean ridges are very nice proof of the continental drift theory. They are one of the evidence that can be observed in the present, where new crust is constantly forming and pilling up, while pushing the old crust sideways further away from it.

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4 years ago
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Answer:

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Explanation:

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The answer is true. if it's not I apologise.
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