Animals and plants use their cells by growing and observing food and oxygen
The answer should be (D) Ca, because all others either occur as diatomic or are anions.
Amount of a substance (called the solute) that dissolves in a unit volume of a liquid substance (called the solvent) to form a saturated solution under specified conditions of temperature and pressure. Solubility is expressed usually as moles of solute per 100 grams of solvent.
(of a river or road) follow a winding course
