- Shopping Bag ( 0 items )
Children's LiteratureCalcium—an amazing element that can be found in nature and even the human body. Author Tocci explains how calcium is an active metal and reacts with almost everything else, even water and air. Calcium has to be stored in safe containers because if it mixes with water, the gas produced becomes highly explosive. The Great Barrier Reef contains the largest amount of calcium in the world. Calcium is also important for animals, plants, and humans. Laying hens need calcium in their diets or their eggs will break easily. Plants need the right amount of calcium in order to grow sufficiently. By drinking milk, and eating yogurt and cheese, humans can maintain the proper amount of calcium in their bodies for muscles to contract correctly, nerves to send signals through the body, and for bones to grow strong and healthy. With weakened bones, older people may develop osteoporosis or soft bones that break easily. The author also provides interesting experiments that can be tried at home. Calcium—this text provides an interesting look at this element. 2004, Children's Press, Ages 7 to 14.