Поставьте артикли, где необходимо (A/an,the)There is more water than land on our planet. The largest and deepest ocean

There is more water than land on our planet. The largest and deepest ocean in the world is the Pacific, then comes the Atlantic. The Indian ocean is only a little smaller. The smallest ocean is the Arctic. The longest river in the USA is the Mississippi, the largest sea is the Mediterranean, the deepest lake is Lake Baikal. Large masses of land are called continents. They are Europe and Asia, North and South America, Australia and Antarctica. There are mountain chains in many parts of the world. Some of them such as the Urals are old, others like the Caucasus are much younger. The highest mountain chain, which is called the Himalayas, is situated in Asia.