Human Population (Ch.5) Flashcards

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1
Q

Describe the 4 stages of a typical population growth curve.

A

1) lag phase
2) exponential growth
3) reaching carrying capacity
4) leveling off

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2
Q

What is the difference between logistic and exponential growth?

A

logistic growth- due to a population facing limited (s-shaped curve)
exponential growth- rapid population increase due to an abundance of resources (J-shaped curve)

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3
Q

What are the density dependent and density independent factors? Give 2 examples.

A

density-dependent- limiting factors, number of individuals
ex) predation, disease
density-independent- limits a populations growth
ex) unusual weather, human activities, natural disasters

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4
Q

What is carrying capacity?

A

maximum number of individuals in a population

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5
Q

What happens when a population exceeds its carrying capacity?

A

threatens biodiversity
1) habitat loss
2) pollution
3)over harvesting

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