1. What does it all mean?
7 Billion and Beyond

2. Population Pyramids

3. Population Pyramids The Basics:
Notice the following points about pyramids:
Normally males are on the left and females are on the right.
Age categories are in 5 year intervals labeled up the center.
The horizontal axis is measured in numbers appropriate for the country.

4. Reading Population Pyramids
Shape of sides
Concave sides indicate a high death rate and convex sides indicate a low death rate.  This population pyramid exhibits concave sides indicating a high death rate.
Width of the base
Birth rate varies with the width of the base.  A wide base indicates a high birth rate and a narrow base indicates a low birth rate.
Bumps in the sides or Symmetry
Statistically speaking pyramids should be relatively symmetrical.  Any asymmetry indicates a difference in the male and female population Irregularities in the sides indicate a demographic anomaly.  The age group in this population pyramid represents the baby boom.  This bump will travel upward as the baby boomers age.

5. 3 Patterns of Change

6. I. Types of Population Pyramids
Negative Growth
Slow Growth
Rapid Growth

7. A. Rapid growth Pyramids
Rapid Growth population pyramids have this triangular/pyramid shape. 
The wide base of this population pyramid indicates a  high birth rate & the narrow top indicates a high death rate.
Generally speaking an expanding population is characteristic of a lower standard of living:
high birth rate due to poor access to birth control, lack of education etc.;
high death rate due to poor medical care & nutrition.

8. B. Slow growth Pyramids
Generally speaking stable populations are characteristic of a high standard of living due to:
Low birth rate due to good family planning, access to birth control, financial planning, education, etc.;
Low death rate due to good medical care, nutrition, education etc.

9. C. Negative Growth pyramids
Negative Growth population pyramids have a narrower base than the reproductive age population. 
This indicates a  decreasing population trend.  The low birth rate is indicative of a well developed country.

10. World Economic Development Levels
7 – 10
4 - 6
1 - 3

11. Development Level: 1 – 3 Generalizations: High death rate
Low standard of living
Poor Health care
Low Literacy Rates – Below 50%
Low Per Capita Incomes - $0 – 5,000
High birth rate

12. Development Level: 4 - 6 Generalizations: Medium to Low Death Rate
Improving standard of living
Improving Health care
Literacy Rates in the 70% to 80%
Per Capita Incomes rising $10,000 - $40,000
Birth rate Declining

13. Development Level 7 - 10 Generalizations: Low Death Rate
High standard of living
Very good Health care
Literacy Rates in the 90’s
Per Capita Incomes $30,000 – and above
Low Birth rate

14. Dependent Populations
Productive Population

15. Average Monthly Temperature
Average Monthly Precipitation