one way to organize our world is to seperate its surface into seven land masses called and four bodies of water called .

i think its the first one

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.

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yes we can.   a lady urinates from her urethra.