# Population Structure

## Gender ratios and reproductive age heavily influence the growth of populations.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Population Structure

Describes how population pyramids and survivorship curves relate to population structure.
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## Age-Sex Structure of Populations - Advanced

by CK-12 //
Shows age and sex structures of a populations.
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• Simulation

## Demographics Simulator

Simulates the projected population growth based on several factors including birth rates, death rates, and the country.
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• PLIX

## Parental Care and Survival

Population Structure Interactive
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• Lesson Plan

## Pyramid Building

This lesson provides students with the background to understand the importance of age structure on population growth. They do this by creating a population pyramid. This process will also help them understand the meaning of different shaped pyramids" and the impacts of these different growth patterns." - Population Reference Bureau
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• Critical Thinking

## Population Structure Discussion Questions

A list of student-submitted discussion questions for Population Structure.
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• Real World Application

## Where's My Otter?

Describes the current state of the Southern Sea Otter and efforts to explain declining population levels. The answer to the problem lies in the interplay of multiple factors giving students a real world conservation problem.
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• Real World Application

## Two's Company, Seven Billion's A Crowd

Learn about trends in human growth and what that light at the end of the tunnel is.
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• Study Guide