Tetanus vaccine can help prevent tetanus disease, commonly known as lockjaw.. Tetanus is a serious disease that causes painful tightening of the muscles, usually all over the body. It can lead to locking of the jaw so the person cannot open his mouth or swallow. Tetanus leads to death in about one in ten cases.
The most abundant dissolved salt in ocean water is sodium chloride. It is a colorless crystalline compound with the chemical formula of NaCl.
portion of solid Earth, living matter, oceans, and the atmosphere. â¢ The composition of Earthâs oceans varies from place to place. â¢ Since the oceans are mostly water, the elements hydrogen and oxygen are the most common. â¢ Sodium and chlorine are found in the salt in ocean water. (contd.)