The loss of tadpole's tail during amphibian metamorphosis and the separation of the digits in human hands during embryonic development are caused by

i would say d

explanation:

by drinking easy

very easy

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.

      n