OCEANS Their Importance
Oceans are the source of all
water on the earth as the evaporated water from over their surface is brought to earth by the winds passing over them. They are highways of the world and most of world trade is carried through the sea. Innumerable fish and other animals living in the oceans are a great source of food to mankind. Minerals like salt, iodine etc. are derived from the ocean waters and sea-weeds.