3.6 Age Structure Diagram

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9 Terms

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Age cohorts

groups of similar aged individuals

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What are the three types of age cohorts in growth

Prereproductive, reproductive, post reproductive

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Prereproductive

0-14 represented in blue

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Reproductive

15-44 represented in yellow

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Post Reproductive

45+ represented in orange

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Larger 0-14 Cohort =

current and future growth

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Roughly equal 0-14 and 15-44

slight growth / stable

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Larger 15-44

pop. decline

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<p>Graph Shapes</p>

Graph Shapes

Extreme pyramid shape - rapid growth *steps, moving quickly*

Less extreme pyramid - slow stable growth *steep, moving slowly*

House - stable, little to no growth *hard time moving up steps*

Narrowest at base - declining pop. *impossible to move

<p>Extreme pyramid shape - <mark data-color="#ebabd0" style="background-color: rgb(235, 171, 208); color: inherit;">rapid</mark> growth <span style="color: rgb(64, 71, 201);">*steps, moving quickly*</span></p><p><span style="color: rgb(0, 0, 0);">Less extreme pyramid - <mark data-color="#ebabd0" style="background-color: rgb(235, 171, 208); color: inherit;">slow stable</mark> growth </span><span style="color: rgb(64, 71, 201);">*steep, moving slowly*</span></p><p><span style="color: rgb(0, 0, 0);">House - <mark data-color="#ebabd0" style="background-color: rgb(235, 171, 208); color: inherit;">stable, little to no growth</mark></span><span style="color: rgb(64, 71, 201);"> *hard time moving up steps*</span></p><p><span style="color: rgb(0, 0, 0);">Narrowest at base - <mark data-color="#ebabd0" style="background-color: rgb(235, 171, 208); color: inherit;">declining pop</mark>.</span><span style="color: rgb(64, 71, 201);"> <em>*</em>impossible to move</span></p>