The three species of hominids, living from 6 to 5.2 million years ago, were the first to exhibit this early hominid characteristic. what was this characteristic that survival in varied habitats?

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

c. establishing proper sleep hygiene