Asteroids range in size from Ceres-the largest at about 950 kilometers (590 miles) in diameter and also identified as a dwarf planet-to bodies that are less than 1 kilometer (0.6 mile) across. The total mass of all the asteroids combined is less than that of Earth's Moon.
While much of the protein in the American diet comes from beef and pork, this isn't necessarily the case around the world. People in some countries eat little or no meat, getting much of their protein from vegetarian protein sources, and some people get their protein from foods many Americans have never tried.
In the diet, protein sources are labeled according to how many of the essential amino acids they provide: â¢ A complete protein source is one that provides all of the essential amino acids. You may also hear these sources called high quality. proteins. Animal-based foods; for example, meat, poultry, fish, milk, eggs, and cheese are considered complete protein sources. â¢ An incomplete protein source is one that is low in one or more of the essential amino acids. Complementary proteins are two or more. incomplete protein sources that together provide adequate amounts of all the essential amino acids. â¢ Every function in the living cell depends on proteins.