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    • Map showing the five main oceans of Earth.
    Rights: The University of Waikato Published 30 June 2010 Size: 500 KB Referencing Hub media

    The ocean is a continuous body of salty water that covers two-thirds of the Earth’s surface. Humans have divided it into five main oceans and many smaller seas.

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      The ocean in action – introduction

      The ocean is part of our lives – we may swim in it, sail on it or eat food from it. Many aspects of the ocean affect us – it controls climate, supports life, wears away land, and provides ...

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