1. Unit 2: Pop Factors
Friday, Sept. 16

2. Friday, September 16
Directions: Answer the following questions to check your understanding.
How did the Industrial Revolution lead to higher populations across the world?
Compare and contrast arithmetic density and physiologic density. Provide one example to illustrate the difference.
Identify a major population cluster from your book/class discussion and describe how population is clustered in that region.
The Population Reference Bureau projects that the world population will reach 9.8 BILLION people by 2050, a 2.5 billion increase from the current 7.45 billion currently inhabiting our planet as of September1, What are some of the human geographic implications of this projection? (Environmental, Social, Political and Demographic)

3. WILL THE WORLD FACE AN OVERPOPULATION PROBLEM?
Essay on the Principles of Population
My theory is that population will eventually outpace food production. While population increases geometrically, food supply increase arithmetically.
Thomas Malthus

4. Thomas Malthus’ Theory

5. Neo-Malthusians Argue:
Critics Argue:
Malthus’ theory is based on a belief that the increase in the world’s food supply is fixed rather than expanding.
An increase in technology and genetic food production has increased the amount of available food.
A larger population stimulates economic growth to produce greater resources.
The growth of less developed countries are outstripping even Malthus’ predictions.
World population is not just stripping food but a lot of other resources as well.
To fix the problem, continue programs for population limitation such as birth control and family planning.

6. WILL THE WORLD FACE AN OVERPOPULATION PROBLEM?
Author of The Population Bomb, warning of the mass starvation of humans in the 1970s and 1980s due to overpopulation.

8. How do you measure population change?
You can measure population change through the Crude Birth Rate, the Crude Death Rate, and the Natural Increase Rate.

9. How do you calculate the natural increase in a country’s population?
SIMPLE EQUATION?
How do you calculate the natural increase in a country’s population?
Current population + births
– deaths + immigrants – emigrants
Future Population

10. Birth & Fertility Rates
Crude Birth Rate
is the ratio of the number of live births in a single year for every 1,000 people in the population.
Influences: economic development, demographic structure, women’s education, religion, social customs, diet and health, availability of birth control, and politics and civil unrest.

11. Birth & Fertility Rates
is a measure of the average number of children a women will have throughout her childbearing years:
Total Fertility Rate
Considering that the TFR is the average number of children per woman, what does the rate have to be for the population to stay the same?
Replacement Level of fertility
Developed World: 2.1
Developing World: 2.2 or 2.3
World: 2.7

13. Fertility Influenced by:
Where does 2.1 come from?
Fertility Influenced by:
Health
Economics
Education
Culture