What sort of writing would be most likely found in a culture that started writing 5,000 years or so ago? Ο Α.
a receipt listing goods that were traded across cities
OB.
a fiction novel subtly critiquing rival nations or groups
OC.
a biography of a successful merchant's family
OD.
a nonfiction history book about prior civilizations

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.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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the answer is a) cell division.

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