Question

Seas and oceans play an important role in supplying water for our use. how?

Answer 1

The water we consume ultimately comes from the sea: because of sunlight, water heats up and evaporates into the atmosphere, where lower temperatures transform steam into droplets, which create clouds. ... More than 97% of the water on earth is in the oceans – the rest is found in glaciers, on lands and in the ground.

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Answer 2

More than 70% of the earth’s surface is covered by water, but we know little about its role in the circle of life.

Water is one of life’s essential components. Without water, many things cannot live: plants, animals, human… More than 70% of the earth’s surface is covered by water, but we know little about its role in the circle of life.

The water we consume ultimately comes from the sea: because of sunlight, water heats up and evaporates into the atmosphere, where lower temperatures transform steam into droplets, which create clouds. In some conditions, those droplets grow bigger and fall back to the earth as rain.

This process of water circulation is relatively simple. But global warming and human race’s action threaten the way we get our fresh water.  More than 97% of the water on earth is in the oceans – the rest is found in glaciers, on lands and in the ground. No matter what we do to protect water supply on lands and in the ground, let’s not forget that the world’s supply of fresh drinking water is also dependent on healthy oceans.