+Zero Population Growth (ZPG) occurs when a [Population](/wiki/population)'s birth rate equals its death rate, resulting in no net change in size. This state of demographic equilibrium is often considered a key aspect of [Sustainability](/wiki/sustainability) and responsible resource management.
+## See also
+- [Demography](/wiki/demography)
+- [Birth Rate](/wiki/birth_rate)
+- [Death Rate](/wiki/death_rate)
... 1 more lines