Large mammals, such as Roosevelt elk, black-tail deer, black bear, and coyote, use grasslands as foraging areas and/or travel routes to adjacent lands. Smaller mammals, such as voles and mice, thrive in grasslands. These smaller mammals serve as prey for raptors such as red-tailed hawks, northern harriers, American kestrels, and various species of owls, all of which use open grasslands as hunting grounds. Songbird and shorebird species use grasslands to rest, nest and feed.
3 of 8. Vitamin D really does the body good. In addition to aiding in the absorption of calcium to build strong muscles and bones, vitamin D helps reduce inflammation and regulate the immune system. Sources: Fatty fish, liver oils, fortified milk products, fortified cereals, meats, eggs, sunlight.
Photo Credit BackyardProduction/iStock/Getty Images. Nothing replaces a solid weight-training routine when it comes to building muscle, but certain vitamin supplements might help augment your results. Before you start popping pills to get fast results, consult with your doctor to see if you have a deficiency. An excess of vitamins won't make you grow muscle faster, but a deficiency may prevent you from reaching your potential.