Examlex
The distinctive red color of Mars is probably caused by
Estrogen
A group of steroid hormones that promote the development and maintenance of female characteristics in the human body.
Endometrium
Mucous membrane lining the interior surface of the uterus.
Follicular Phase
The stage of a woman's menstrual cycle during which follicles in the ovary mature, ending with ovulation.
Placenta
An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to the growing baby while removing waste products from the baby's blood.
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