1. Radon is a radioactive noble gas that comes from the decay of radium in the soil. Radium is also a daughter or progeny nuclide of uranium (the entire decay chain).Radon is a colorless, odorless, invisible gas that can only be detected through the use of proper equipment and protocols.. Radon is a radioactive noble gas that comes from the decay of radium in the soil. Radium is also a daughter or progeny nuclide of uranium (the entire decay chain).
Function. Although female breasts are considered sexual, the mammary glands are not part of the reproductive system of a female. The function of the mammary glands is to produce the motherâs milk in order to nourish the baby.
mammary gland definition: nounAny of the milk-producing glands in female mammals, consisting of lobes containing clusters of alveoli with a system of ducts to convey the milk to an external nipple or teat. These glands typically occur in pairs and begin sec...