Because this tendency can be seen across the species, for example small dogs tend to have larger and/more frequent litters than large dogs, it’s probably built into our makeup.
They’ve been able to show empiracally that if a species moves from a high death rate to a lower death rate, the number of births they give will also drop.
Have they been able to demonstrate experimentally, with controls, that this is caused by genetic coding rather than by environmental factors?
“They’ve been able to show empiracally that if a species moves from a high death rate to a lower death rate, the number of births they give will also drop.”
r/K Selection theory. High mortality equals rejection of competition, early mating, promiscuous mating, and low investment single parenting. r-selection.
Low Mortality produces an embrace of competition, later mating, monogamy, and high investment two-parent child rearing. K-selection.
It is the evolutionary origin of our political ideologies.