Why is it said that life began in the oceans?

              Have you tried to stay underwater holding your breath? We cannot live in a sea or river like a fish, because our body cannot take oxygen from water. However, there are innumerable organisms in oceans. In fact, life began in water.

              Two-thirds of the surface of the earth is covered with water. Oceans and seas were formed very long ago, long before there were any plants, animals or people on Earth. The earth was made up of red-hot rocks then. When they cooled, they gave off steam. This steam became rain, which fell and filled up the hollows and deep holes in the earth’s surface to become oceans.

              The first life was not as complex and developed as it is found now. It probably was one-celled organisms. The first plants that appeared on this planet were microscopic, single-celled organisms floating in the world’s oceans, billions of years ago. That is why we say that life began in water, and not on land.

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