A population explosion is a sudden increase in the number of individuals in a particular species.
The term is typically used in reference to the world's human population, especially the population boom that followed the end of World War II due to a combination of an accelerated birth rate, decrease in infant mortality, and an increased life expectancy.
The explosion of a species population can throw an ecosystem out of equilibrium. In the case of the human population, explosive growth can have far-reaching environmental and economic impacts.
Human population explosions is sometimes cited as a cause of resource scarcity and a lack of opportunity for individuals.
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