> giving birth and breastfeeding being a very costly event with very real risks for almost all women.
Natural selection suggests that women who find giving birth and breastfeeding more difficult than average women, will die off over time and be replaced by the descendents of those women who found it easier than average women.
Natural selection suggests that women who find giving birth and breastfeeding more difficult than average women, will die off over time and be replaced by the descendents of those women who found it easier than average women.