Earth is known as the blue planet because 71% of the Earth's surface is covered with water, but we still face water shortage. What can be the possible reason for this?

Ocean water cannot be used on land

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Most of the available water is salty and unfit for consumption

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Ocean water is full of disease-causing microbes

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Ocean water is available only in coastal areas

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Solution

The correct option is B
Most of the available water is salty and unfit for consumption

Though 71% percent of Earth's surface is covered by water, we still face water shortages because most of the water is available in oceans. This water is salty and cannot be used for our daily activities directly.

The process of converting this salt water to freshwater is very expensive.

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