Zero Population Growth
Definition
Zero population growth refers to a state where the birth rate and death rate in a population are equal, resulting in no net increase or decrease in the total number of individuals.
Analogy
Imagine a water tank with a small hole at the bottom. If the amount of water flowing into the tank is equal to the amount leaking out, then there will be zero change in the water level. This is similar to zero population growth, where births and deaths balance each other out.
Related terms
Carrying Capacity: The maximum number of individuals that an environment can sustainably support.
Replacement Level Fertility: The average number of children per woman needed for a population to replace itself without immigration.
Demographic Transition Model: A model that describes how populations change over time as countries go through different stages of economic development.
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