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Water covers a large part of the earth. Indeed, there is much more water than land. Oceans and seas cover more than 70% of  surface of the earth.

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Today, with millions kept as pets in homes around the world, cats have become important members of many families. No one knows for sure when or  cats became very popular household pets. 

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More  two-thirds of the human body is composed of water.

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 waiting for a vacancy, Nicolaus Copernicus went to Italy, where he studied law and medicine, as well as continuing his studies of astronomy. 

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Not all water is safe to drink  to the fact that it contains dangerous bacteria and harmful chemicals.

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With due respect, that is not the case.