1. Calcium carbonate minerals are the building blocks for the skeletons and shells of mini marine organisms. It is important to ocean creatures because they make their shells out of this material. Examples of animal products that are primarily of calcium carbonate include seashells, egg shells, pearls, and notably coral
Cows technically only have one stomach, but it has four distinct compartments.
Answer: A negative feedback mechanism is a regulatory mechanism in which a stimulus causes an opposite output in order to maintain an ideal level of whatever is being regulated. Example: osmoregulation. A positive feedback mechanism is a process in which the end products of an action cause more of that action to occur in a feedback loop. Example: childbirth.
