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Geography > Overpopulation And Developement > Flashcards

Overpopulation And Developement Flashcards

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1
Q

What is carrying capacity

A

The number of people a region can support

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2
Q

What is overpopulation

A

When the number of people in a region is greater then the carrying capacity

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3
Q

What causes over population

A

Migration
Birth rates
Overuse of resources

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4
Q

What are the factors that increase carrying capacity

A 
Decreasing pop
Fertilisers
Better animals and crops 
New farming methods 
Land reclamation.
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5
Q

What factors decrease the carrying capacity

A 
Population growth 
Soil erosion
Deforestation
Flooding
Over grazing 
Urbanisation 
Climate change
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6
Q

What is the av no of children per women in the Sahel region

A

5.6

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7
Q

What is the pop of the Sahel region

A

138.6 million

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8
Q

What makes the Sahel over populated

A

High birth rates
Civil unrest
Migration
Environmental degradation

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9
Q

How many people have fled the boarder into chad

A

120000

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10
Q

What are the factors affecting the Sahel region

A

Overgrazing
Overcultivation
Deforestation
High birth rates

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11
Q

What impact does over grazing have

A

Grass can’t grow
Soil erosion
Desertification

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12
Q

What impact does overcultivation have

A

Continual use of soil leads to loss of soil structure
Soil erosion
Desertification

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13
Q

What impact does deforestation have

A

Reduces transpiration of moisture from plants
Animal manure is used instead of wood
Reduced crop cover

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14
Q

What affect does high birth rates have

A

Population growth

Migration

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15
Q

How many people live off less then 0.77 each day

A

1.3 billion

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16
Q

How many people don’t get enough to eat each day

A

800 million

17
Q

How many people are constantly malnourished

A

500

18
Q

How much does
A) cereal
B) meat need to grow by in the next 20 years

A

A) 35

B) 55

19
Q

How has technology helped over population

A 
Biotechnology 
Chemicals to control pests
Irrigation methods 
Glasshouse production 
Computer controlled systems 
Machinery
20
Q

How has health care helped population growth

A

Immunisation
Primary health care
Disease eradication

Geography (9 decks)

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