ch4 Flashcards

1
Q

population

A

•is the number of all the organisms of the same group or species, which live in a particular geographical area, and have the capability of interbreeding.

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2
Q

Current Population Trends

A
  • Amplifies all environmental problems
  • Largest increase expected in developing countries (approximately 97%)
  • Decreasing in some developed countries
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3
Q

Population change equation

A

Population change = (Births + Immigration) – (Deaths + Emigration)

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4
Q

Crude birth rate

A

Crude birth rate = births per 1000 people in population per year

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5
Q

Crude death rate

A

= deaths per 1000 people in population per year

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6
Q

Total Fertility Rate (TFR)

A

•Number of children a woman has during her lifetime, averaged for population.

same as biotic potential (r)

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7
Q

Replacement Level Fertility

A

Number of children needed to replace everyone in the population.

•Varies between regions

  1. 1 with low infant mortality
  2. 5 with high infant mortality
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8
Q

Zero Population Growth

A

Birth rate equals death rate.

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9
Q

Sex Ratio-

A

•Relative number of males and females in a population

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10
Q

Age Distribution

A

Number of individuals of each age in a population

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11
Q

sex ratio and age distribution

A

•Together they tell how a population will grow

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12
Q
A

rapid growth (developing countries)

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13
Q
A

slow growth (developed countries)

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14
Q
A

zero growth (developed countries)

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15
Q
A

Navigation growth (developed countries)

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16
Q

Growth is determined by

A

teenagers – the population wave of the future.

17
Q

infant mortality rate comparison between developed and developing countries

A

Developed: low infant mortality rate

Developing: high infant mortality rate

18
Q

Several factors determine the impact of a society on natural resources

A

•Population size

•Population density
Population density is population divided by total land area or water volume, as appropriate.

•Degree of technological development

19
Q

Demography

A

Study of populations and their characteristics

20
Q

environmental impact of population (I)

A

population (P) x consumption per person (affluence,A) x technological impact per unit of consumption(T)

21
Q

Factors Affecting Birth Rates and Total Fertility Rates

A
  • Children in Labor Force
  • Cost of raising and educating children
  • Availability of pension systems
  • Urbanization
  • Education and employment for women
  • Infant mortality rate
  • Average marrying age
  • Abortion
  • Availability of birth control

22
Q

Major social factor determining family size is the role of women in society.

A
  • Early marriages foster high fertility rates.
  • Lack of education opportunities for women reduces their options.
  • When level of education increases, fertility rates fall.
  • The most important factor is the ability of women to control the size of their family.
  • Access to birth control is key.
23
Q

As countries become industrialized

A

death rates, then birth rates decline.

24
Q

Cutting Global Population Growth

A
  • Family planning
  • Improve health care
  • Elevate the status of women
  • Increase education
  • Involve men in parenting
  • Reduce poverty
  • Sustainability
25
Q

Undesirable Impacts of Urban Sprawl

A

Loss of crop land, forest land, and wetlands

Fragmenting fish and wildlife habitats

Increased impervious surfaces means more flooding

And soil erosion

And a larger ecological footprint

26
Q

Urban Land-Use Planning and Control

A
  • Land-use planning
  • Property taxes
  • Zoning
  • Smart growth
  • Urban growth boundary
  • Greenbelts