why is ocean water of limited use to humans ?What makes it a resource
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Answer to the first question - Ocean water is abundant in supply, but it is not fit for use. It can be filtered and used, but if worldwide consumption starts taking place, it can result in a large number of expenses, as it is not as easy to filter it like lake or ground water. Due to its being exposed to factory chemicals and large amounts of metals and salts, it cannot be also used for other functions in a raw form.
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Oceans are considerably Earth’s most valuable natural resources.
Some of the important examples why we call oceans an important natural resources are given below.
They are used for transportation across the globe.
They supply us food in form of fish in billions of pounds, each year.
They play a crucial role in converting carbon dioxide in the atmosphere into oxygen.
They provide us crude oil.
They provide us salts and minerals like manganese, copper, iron and nickel.
They provide us medicines from some important biomedical organisms.
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