1.1 - Population dynamics Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Give some reasons for high population growth: (5)

A

-high birth/fertility rate
-high infant mortality (death under 1)
-family support is needed for future
-careers (none for women due to lack of education)
-contraception/family planning/abortions unavailable

(BIFCC)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Why are there so many elderly people in MEDC’s?

A

-low death rate/^life expectancy
-pensions
-investment in hospitals/elderly care
-education on a healthy lifestyle
-supply of hygienic water/food

(D, PIES)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Define over/underpopulation:

A

-where a population is well above/below its carrying capacity

-which is the maximum pop. that can be sustained, given the available resources (food/habitat/water)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Why might an area be overpopulated?

A

-^migration
-^urban concentration (people mainly living in cities)
-low death rate (better medicine) and increasing birth rate
-low carrying capacity so lack of basic resources (people have more children to increase chance of survival)

(MULL)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the causes for an area to be underpopulated?

A

-surplus of resources
-remote area
-high carrying capacity with too little people to fulfill it
-war
-emigration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Give some general problems caused by overpopulation:

A

-^competition and depletion of resources
-^famine + disease (eg cholera)
-^pollution (be specific, eg air pollution from traffic congestion)
-loss of habitats due to deforestation needed for increased housing
-strains on healthcare/education facilities

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Define birth/death rate:

A

deaths/live births per 1000 in a given year

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Define rate of natural population increase:

A

difference between birth and death rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Define dependency ratio:

A

ratio of dependents to the economically active (dep./indep.)

Having a high dependency ratio means there are more dependents

How well did you know this?
1
Not at all
2
3
4
5
Perfectly