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Flashcards in population and resources Deck (21)
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1
Q

the population resources and pollution model

A

represents a fundimental ecological relationship

2
Q

is there positive and negative feedback between the population and resource model?

A

YES

3
Q

what are the 4 challenges driven by human population growth?

A

environmental degradation
economic loss
political conflict
social disruption

4
Q

what are the challenges with political conflict (population growth)

A
  • managing resources
  • managing population
  • conflicts/wars over resources
  • pressure to use protected areas
5
Q

what are the challenges with social disruption? (population growth)

A
  • demand for housing
  • increase in population size
  • disease/pandemics
  • providing adequate healthcare
6
Q

what are the challenges with economic loss (population growth)

A
  • more energy use
  • increased unemployment
  • scarce resources
  • price rises
7
Q

what are the challenges with environmental degradation?

A
  • increased pollution
  • more waste
  • climate change
  • increased use of fossil fuels
  • habitat loss
  • deforestation
  • pressure on space
8
Q

UN population estimates

A

predicted 3 scenarios for population change

9
Q

UN population estimates scenario 1

A

population continuing to increase rapidly -finding ways to cope with increasing demand

10
Q

UN population estimates scenario 2

A

gradual slowing in growth rate due to better healthcare and people having children later

11
Q

UN population estimates scenario 3

A

drastic action will have been taken to reduce population growth e.g war and disease outbreaks

12
Q

contrasting perspectives on population growth. who are the 3 perspectives

A

julian simon
thomas malthus
ester boserup

13
Q

predictions of thomas malthus

A

-unless population was slowed by for example later marriages the exponential rise would outstrip food supply ( reach a point where we cant cope any longer) wont be enough resources

14
Q

malthus graph

A

population grows rapidly

exceeds carrying capacity

15
Q

what are the problems with malthus’ ideas?

A

based on western experience

16
Q

support for mathusian predictions - club of rome

A

1968 used computerised models to investigate the state of a range of resources as well as pop growth
their limits to growth report predicted that economic growth could not continue because of the limited availability of natural resources

17
Q

what did the limits to growth model predict?

A
  • population would continue to rise until 2050 and decline after
  • rapid resource depletion in first half of 21st century
  • pollution increases then falls in 2030
18
Q

predictions of ester boserup

A

argued agricultural innovations such as green revolution proved population growth stimulated changes necessary to support extra numbers

19
Q

predictions of julian simon

A

at times of scarity the greatest gains could be made from entrepreneurs substituting new resources and innovating

20
Q

contemporary issues

A

demographic growth
agricultural growth
consumption growth
environmental degradation

21
Q

does technology have all the answers

A
  • limits of food production by environmental factors
  • soil exhaustion and erosion
  • climate change
  • water shortages and pollution
  • technology may be available but not shared
  • may be too expensive in some regions