Look at the photo and please help

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

Iguess i would say diagrams would be most difficult subject too correct

Aplant cell has vacuoles and a cell wall