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There are great reserves of Ocean waters on the earth. Around 97 percent of total water is found in the oceans and simultaneously 70 percent of the earths area is covered with Oceans.
Worlds generally all seas, mountains, lakes and the snow and water emerging from the mountains, all get accumulated and meet in the oceans. In Hindu mythology Lord Vishnu has been said to be resting in the Ocean. Varun has been called as God of Oceans.
In our solar system, the oceans found on the earth are monism. No such Oceans are found on any other planet. Oceans have their own whole world filled with mysteries and diffusion. Every being of the ocean is there to create amusement in us. In spite of so many researches, yet several mysteries of the oceans remain unsolved.
Rivers and lakes are too very important to us and our environment as they provide us with fresh and clean water. Rivers flow from a number of origins. These origins can be lakes and mountains. Almost every river meets another river or ocean at the end of its journey. The river which meets the main river is called the Helper Rivers. The area from where a river passes is called its water accepting area. To maintain the level of the river and its flowing speed it is necessary to make sure that we dont exploit the water accepting place.
Many rivers become a cause of flood in many places in the monsoon season. If the river is large then it can affect a large area. The rivers which carry a lot of top soil with them often form deltas.
Many forests grow on the banks of the rivers including a number of species. Many fishes have adapted to live in the rivers as well as the seas like the Hilsa and Salmon fishes.
From thousands of years rivers have been playing an important role in the lives of the human beings and this is the reason why many important towns and cities are located on the banks of the rivers.
We love our rivers, we pray to them but we also pollute them. We use the river water for drinking, bathing, as a means of transportation and entertainment, we also use them to generate electricity and then we throw the waste in the rivers. This is not taking advantage but in this way we are ruining our own future.
We started using rivers as a means of transportation 3300 years ago. This happened when people floated a boat for the first time in the river Indus. From that time till now we can see a number of rivers used as a means of transportation. Some of these rivers are Ganga, Nile and Mississippi Missouri.
We catch many fishes from these rivers while they also help us in irrigation. In the following book detailed information has been given about main rivers, oceans and lakes. Lets know more about them.

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