IB Biology Topic C4.1.7: Population Growth Curves Notes

Each Phase Reflects the Balance Between Births and Deaths

Exponential phase: the population grows rapidly.

Resources are abundant and limiting factors are few.
The birth rate greatly exceeds the death rate, so numbers roughly double each interval.

Transitional phase: growth slows down.

Resources become limited, so competition, predation, and disease increase.
The death rate rises toward the birth rate, so growth decelerates.

Plateau phase: the population levels off at the carrying capacity.

The birth rate and death rate are roughly equal.

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Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
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IB Biology Topic C4.1.7: Population Growth Curves Notes

Population Growth Follows an S-Shaped Curve With Three Phases

Each Phase Reflects the Balance Between Births and Deaths

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

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Population Growth Follows an S-Shaped Curve With Three Phases

Each Phase Reflects the Balance Between Births and Deaths

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

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A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic C4.1.7: Population Growth Curves Notes

Population Growth Follows an S-Shaped Curve With Three Phases

Each Phase Reflects the Balance Between Births and Deaths

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Population Growth Follows an S-Shaped Curve With Three Phases

Each Phase Reflects the Balance Between Births and Deaths

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics