Заповнить пропуски артиклями де необхдно

There is more water than land on our planet . The largest and the deepest ocean in the world is the Pacific and then comes the Atlantic. The Indian Ocean is only a little smaller. The smallest ocean is the Artic.
The longest river in the world is the Mississippi, the largest sea is the Mediterranean, and 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 Caucasians are much younger. The highest mountain chain, which is called the Himalayas, is situated in Asia.