When you see wood burning, what evidence do you observe that a chemical change is happening? Click ALL that apply.

answer; (phospholipid);

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.

a and c are the answeres