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population

the people living in a particular region; especially the total number of people in an area

population distribution

how a populatioin is spread over and area

population density

the average number of people living in an area

birthrate

the number of live births each year per 1,000 people

deathrate

the number of deaths each year per 1,000 people

demographer

a scientist who srudies human populations, including their sidze; growth; density; distribution; and rates of births, marriages and deaths

life expectancy

the number of yeats that a person may be expected, on average to live

green revolution

changes in agriculture since the 1950's that have greatly increased the worlds food supply; the green revolution reliance on costly technologies and dangerous pesticides can be both financially and evironmentally damaging to nations

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