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# Chapter 3 Section 1

TermDefinition
Population The total number of people in an area
Population Distribution The way the population is spread out over an area
Demography The science that studies population distribution and change
Population Density The average number of people per square mile or square kilometer
Birthrate The number of live births each year per 1,000 people
Death rate The number of deaths each year per 1,000 people
“Formula” for Population Density population divided by size of area
Why has population increased rapidly since 1800? Examples: Better farming and greater food supply; more clean water; better medicine and healthcare
What are some challenges of population growth? Examples: Not enough fresh water or food; not enough jobs; not enough schools; negative effects on the environment (pollution, destroyed forests)
If the birthrate is greater than death rate, population will... Increase
If the death rate is greater than the birth rate, population will... Decrease
In the past (before 1800), most people lived... On farms where they could grow their own food.
Created by: wcabana
Popular Geography sets

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