The answer to that is, Chlorine
ATP
Explanation:
ATP is produced in the cells and its conversion to energy is a single-step process.
Explanation:
A dichotomous key is a tool that allows the user to determine the identity of items in the natural world, such as trees, wildflowers, mammals, reptiles, rocks, and fish. Keys consist of a series of choices that lead the user to the correct name of a given item. "Dichotomous" means "divided into two parts".
Placenta
It also does not allow the maternal and fetal bloodstreams to mix