The number of people entering a population through 'birth' or immigration' being equal to the number of people leaving it via 'emigration' or 'death' is called:

Key Points

• Zero population growth is when the number of people entering a population through birth or immigration equals the number of people leaving it via emigration or death.
• This balance means that the overall population size remains constant, without growth or decline.
• Zero population growth can be an indicator of a stable society in terms of population dynamics.
• It is an important concept in demography and population studies as it helps in understanding the sustainability of a population.

Additional Information

• Zero population growth does not imply that there are no births or deaths, but rather that they occur at equal rates.
• Population policies in some countries aim for zero population growth to manage resources and environmental impact.
• Factors influencing zero population growth include family planning, economic conditions, and social policies.
• It can contribute to long-term environmental sustainability by reducing the strain on natural resources.