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.
The Baltic Sea has less salinity with 5 to 15 parts of salts per thousand pounds of ocean water. The North Atlantic Ocean is the saltiest with 37.9 pounds of salt per thousand pounds of ocean water. (Also know about dead sea) William Dittmar, a scientist collected several samples of ocean water to detect the salinity.