Biology — Population Change
Demographic change and age-structure shapes.
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\text{natural change} = \text{births} - \text{deaths}
\text{expanding: wide base}
\text{stable: roughly even}
\text{contracting: narrow base}
Demographic change and age-structure shapes.
\text{natural change} = \text{births} - \text{deaths}
\text{expanding: wide base}
\text{stable: roughly even}
\text{contracting: narrow base}