original: compared with other species , human childbirth is dangerous .
simplifications: compared with other species , human childbirth is dangerous . human childbirth is more critical as compared with other species . compared with other species , human childbirth is dangerous . human childbirth is dangerous compared to other species . compared to other animals , human childbirth is dangerous . human childbirth is dangerous compared with other species . compared with other special , human childbirth is risky . unlike with other species , human childbirth is dangerous .