3 ms·
Anything below replacement is removal, even if gradual or slow.
by jojobas 6y ago
Anything below replacement is removal, even if gradual or slow.
- Retric 6y agoOnly on very long timescales, looking at worldwide fertility rates over just the last 100 years shows how dramatically this can change. Further, if the male vs female reproduction rate for a slice of the population is vastly different, the number of genetic grandchildren may be above replacement rate even if their children are at or below replacement rate.