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.
Protein is one of three primary types of macronutrients that provide your body with energy, regulate its functioning and facilitate development.hoto Credit ColorBlind Images/Blend Images/Getty Images. Protein is one of three primary types of macronutrients that provide your body with energy, regulate its functioning and facilitate development. A protein consists of a chain of amino acids that your body uses for energy and to make new proteins.