1. Air enters the nostrils.
2. Air passes from the trachea to the bronchi
3. Air diffuses from the alveoli to the blood cells.
4. Oxygen enters the blood cells.
5. Blood transports oxygen to other cells.
B uses radiation so I would assume it would be the one using x rays
Well the womans egg cells get fertitlize d(a baby will form) from the sperm which came from the guy
lmaooooo I hate dis shiiiii