Human Population Flashcards by SOPHIA MIRANDA

Q

Total Population

A

7.6 billion

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Q

Total US population

A

326 million

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Q

Total Fertility Rate

A

Average # of babies women have in a lifetime

High in developing
Low in developed

Highest: Africa

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Q

Replacement Level Fertility Rate

A

How many children needed to replace woman and spouse

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Q

Crude Birth Rate/Death Rate

A

of ppl born dead per 1000 per year

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Q

Demographic Momentum

A

Population increase

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Q

Density Dependent Factors

A

Competition
Predation
Parasitism

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Q

Density Independent Factors

A

Weather
Climate
Volcanoes
Fires
Floods

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Q

Tragedy of the Commons

A

Overpopulation

Ecosystems degrading/resources used up

Government must intervene to stop population growth

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Q

Shape of rapidly expanding population

A

/ \

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Q

Shape of declining population

A

\ /

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Q

Shape of stable population

A

( )

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Q

Calculation for Population Change

A

(Birth + Immigration) - (Death + Emigration)/1000

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Q

Calculation for doubling time

A

70/Population Change

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