pop and environment chat gpt Flashcards

1
Q

What is carrying capacity?

A

The maximum population size an environment can sustainably support without environmental degradation.

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2
Q

Define overpopulation.

A

When the population exceeds the carrying capacity of an area.

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3
Q

Define underpopulation.

A

When there are too few people to make full use of resources.

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4
Q

Define optimum population.

A

The population size producing the highest possible standard of living for a given environment.

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5
Q

What is population density?

A

The number of people per square kilometre.

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6
Q

What is population distribution?

A

The pattern of where people live within a given area.

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7
Q

Name three physical factors affecting population distribution.

A

Climate, relief, water availability.

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8
Q

Name three human factors affecting population distribution.

A

Infrastructure, economic opportunities, political stability.

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9
Q

What is a population pyramid?

A

A graph showing the age and gender structure of a population.

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10
Q

What is dependency ratio?

A

The ratio of dependents (under 15 and over 65) to the working-age population.

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11
Q

What is natural population change?

A

The difference between birth and death rates.

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12
Q

What is birth rate?

A

Number of live births per 1,000 people per year.

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13
Q

What is death rate?

A

Number of deaths per 1,000 people per year.

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14
Q

What is fertility rate?

A

Average number of children a woman will have during her lifetime.

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15
Q

Define infant mortality rate.

A

Number of infant deaths per 1,000 live births before age 1.

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16
Q

What is life expectancy?

A

Average number of years a person is expected to live.

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17
Q

What factors influence birth rates?

A

Economic development, contraception, cultural norms, education of women.

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18
Q

What factors influence death rates?

A

Healthcare access, nutrition, sanitation, conflict, diseases.

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19
Q

What is migration?

A

The movement of people from one place to another.

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20
Q

What are push and pull factors?

A

Push: factors driving people away (e.g. war). Pull: factors attracting people (e.g. jobs).

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21
Q

What is the Malthusian Theory?

A

Population grows faster than food supply, leading to famine and disease.

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22
Q

What is the Boserup Hypothesis?

A

Population growth encourages technological innovation in food production.

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23
Q

What is the demographic transition model (DTM)?

A

A model showing how birth and death rates change as a country develops.

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24
Q

How many stages are in the DTM?

A

Five.

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25
Describe Stage 1 of the DTM.
High birth and death rates, low growth.
26
Describe Stage 5 of the DTM.
Low birth rates, slightly rising death rates, population decline.
27
What is the epidemiological transition model (ETM)?
Shows how causes of death change with economic development.
28
What is the cause of death in Stage 1 of the ETM?
Infectious and communicable diseases.
29
What is the cause of death in Stage 4 of the ETM?
Degenerative and lifestyle diseases.
30
What is a limitation of the DTM?
Based on European experience; ignores cultural, religious, or political factors.
31
Define morbidity.
The rate of disease in a population.
32
Define mortality.
The number of deaths in a population.
33
Name two environmental factors affecting health.
Climate and air quality.
34
How does air pollution affect health?
Increases respiratory and cardiovascular diseases.
35
How does water quality impact health?
Poor water causes diseases like cholera and dysentery.
36
Name a vector-borne disease.
Malaria.
37
What is a pandemic?
A global disease outbreak.
38
Name a pandemic from the 21st century.
COVID-19.
39
How does climate influence disease?
Warmer, wetter climates encourage vectors like mosquitoes.
40
Define agricultural productivity.
The output of food per unit of input.
41
Name three physical factors affecting agriculture.
Climate, soil fertility, topography.
42
Name three human factors affecting agriculture.
Technology, government policy, market access.
43
What is intensive farming?
High-input, high-yield farming over small areas.
44
What is extensive farming?
Low-input, low-yield farming over large areas.
45
Define subsistence farming.
Growing food for personal/family consumption.
46
Define commercial farming.
Farming for sale and profit.
47
What was the Green Revolution?
Agricultural intensification using high-yield crops, fertilisers, pesticides.
48
Name one benefit of the Green Revolution.
Increased food production in Asia.
49
Name one problem of the Green Revolution.
Soil degradation and reliance on chemicals.
50
What is soil?
A mix of minerals, organic matter, water and air supporting plant life.
51
Name five factors influencing soil formation.
Climate, organisms, parent material, relief, time.
52
Define soil degradation.
Loss of soil fertility through erosion, salinisation, compaction.
53
Name one human cause of soil degradation.
Deforestation.
54
Name one environmental consequence of soil erosion.
Flooding.
55
What is nutrient cycling?
The transfer of nutrients between soil, plants, animals, and decomposers.
56
Why is nutrient cycling important?
Maintains soil fertility and sustainable food production.
57
Name one soil management strategy.
Crop rotation.
58
Define food security.
Reliable access to sufficient, safe, and nutritious food.
59
Name a factor affecting food security.
Climate change.
60
Define famine.
Severe, widespread food shortage causing malnutrition and death.
61
Name a cause of famine.
Drought.
62
Define undernutrition.
Insufficient calorie intake.
63
Define malnutrition.
Deficiency or imbalance of nutrients.
64
Why is food insecurity a problem in Ethiopia?
Drought, conflict, and soil degradation.
65
Name one food security strategy in Ethiopia.
Sustainable Land Management Programme (SLMP).
66
What makes Ethiopia vulnerable to malaria?
Warm climate and poor healthcare.
67
Name one malaria control measure in Ethiopia.
Insecticide-treated bed nets.
68
What does a wide base in a population pyramid show?
High birth rates.
69
What does a narrowing apex in a population pyramid show?
High death rates in older age groups.
70
How do you calculate natural increase?
Birth rate minus death rate.
71
How can maps be used in population studies?
To show population density, health risks, and resource distribution.
72
Name a method to present population distribution.
Choropleth maps.
73
How can GIS help manage food security?
Map areas of food production and vulnerability.