Pollutants are substances that do harm to an environment and the beings
that live in it. Fresh water and oxygen are beneficial and necessary for
life. Hydrogen is a naturally occuring element and isn't harmful. The
EPA is a government department that works to prevent pollution.
But my guess its a oxygen? Or carbon dioxide?
seven species of dolphins
Specifically, we tested for the presence of lipids, proteins, polysaccharides, and monosaccharides in samples of potato, oil, milk, sugar, egg, rice, tofu, bread, and glucose. It is important to know about the presence of different types of macromolecules in our food because it is important. Google
