Answer:
Critical period
Explanation:
Critical period - it is referred to that time period in biology that represents the maturational phase in any organism during which the nervous system is sensitive to certain stimuli.
Example of a critical period - the embryonic stage is referred to as the critical period for growth in humans. Growth of heart, hands, eyes, etc is some growth in humans that assume to be critical period growth.
Cells, Cells, they're made of organelles.
I think its thru blood cells im not sure though.
Answer: menstruation
Explanation: the process in a female of discharging blood and other materials from the lining of the uterus at intervals of about one lunar month from puberty until menopause, except during pregnancy.