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Overpopulation and solution

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better irrigation conditions. 4.Industrial and trade developments ... If A only plants rice and B only grows wheat,then change half of what they get, ... – PowerPoint PPT presentation

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Title: Overpopulation and solution


1
Overpopulation and solution
2
overpopulation
  • 1.When does overpopulation occur?
  • 2.In what kind of countries does overpopulation
    likely to occur,poor countries or rich countries ?

3
overpopulation
  • 1.When does overpopulation occur?
  • 2.In what kind of countries does overpopulation
    like to occur,poor countries or rich countries ?

When a country does not have enough resources to
support her people
4
overpopulation
  • 1.When does overpopulation occur?
  • 2.In what kind of countries does overpopulation
    likely to occur,poor countries or rich countries
    ?
  • Why?

5
overpopulation
  • 1.When does overpopulation occur?
  • 2.In what kind of countries does overpopulation
    like to occur,poor countries or rich countries ?

Poor countries has a rapid population growth and
they cannot provide enough food and jobs for all
the people.
6
the problems of overpopulation
7
(No Transcript)
8
the problems of overpopulation
  • Shortage of food
  • Shortage of social facilities ,like houses
    ,schools and hospitals.
  • Shortage of jobs
  • Environmental pollution
  • Traffic congestion
  • )

9
Some solutions to overpopulation
  • Since overpopulation results from a large
    population and a shortage of resources,how to
    solve the problems of overpopulation?
  • Population growth has to be slowed down.
  • Better ways of using resources must be found.

10
Can you tell some ways to solve the problems of
overpopulation?
  • Family planning
  • Migration
  • Build more social facilities like houses ,schools
    and hospitals
  • Build cities by good plans
  • The better ways of using resources
  • Improve the level of education
  • improve the level of technology
  • Protect the natural environments
  • Cooperate with other countries and places in
    developing economic.
  • Wars

11
1.Controlling population growth
  • Family planning
  • Do you think family planning is a good way to
    control population growth? How many children will
    you have in your future?
  • What does family planning encourage people to do ?

to have fewer children to marry later
12
2.Migration
  • How is the population distributed,evenly or
    unevenly?
  • Unevenly
  • Usually, what kind of places is overpopulated
    ,crowed areas or less crowded areas?
  • crowed areas
  • The government try to encourage people to migrate
    from a populated area to a
    populated area.
  • (densely ,sparsely)

13
3.Produce more food
  • Farming Improvements
  • In order to produce more food, what kind of
    improvements have been made?

more fertilisers more machines
better seeds better irrigation
conditions
14
4.Industrial and trade developments
  • Why can industries help to solve overpopulation
    problem?
  • Industries can be developed to provide more
    jobs for people.
  • It can produce more goods for people to use.
  • Why can trade help to solve overpopulation
    problem?
  • It can let people use the resources better.
  • e.g.

15
Advantage of trade
A and B,each have a piece of field of two mu ,
if they plant both wheat and rice, both of them
can get 1200kg foodstuff a year.
If A only plants rice and B only grows wheat,then
change half of what they get,each can get 1300kg
foodstuff a year.
16
What is an ideal place?
17
Ideal place
  • can produce a lot of food
  • can get a good job
  • large house
  • good school and hospital ,etc.
  • no traffic congestion
  • less pollution

18
What should we do?
  • study hard
  • save energy
  • save water and land
  • control pollution
  • protect the environments
  • go to school by bike or on foot.
  • find new resources

19
Thank you for listening
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