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.
Only about one-third of the protein eaten around the world comes from animals raised for food. Much of the protein consumed around the world comes from vegetarian sources, including grains, legumes, nuts and seeds. Three grains -- wheat, maize and rice -- provide 60 percent of the world's energy, as well as a good percentage of the protein consumed.
Soybean protein is also one of the least expensive sources of dietary protein. 1  Soy is known as a natural source of phytonutrients. 2  Diets low in saturated fat and cholesterol that include 25 grams of soy protein a day may reduce the risk of heart disease. 3  Soy isoflavones have been used for overall health.