Grows and regresses (it's shed) with each monthly cycle the vagina
the endometrium
the perimetrium
the cervix
the myometrium

the scientific method.

the answer to your question is tooth decay.

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.