When the death rate and the birth rate are equal. This basically means that the amount of people that are dying are being replaced by babies being born. But no extra babies are being born so there is no population growth.
Zero population growth would have far reaching concequences. In overpopulated areas limiting population growth can reduce the strain on resources. Zero population growth indicates the number of...
The so-called replacement rate is about 2.2 births per fertile woman. That's what a society needs to maintain zero population growth. That "extra" 0.2 people is what's needed to account for premature...