Back To The Oceans

An ocean is a large area of salt water between continents. About 97% of the water on the earth is found in oceans. 2% is in the form of frozen glaciers and ice-caps. The water that snow or rain bring to different regions of the earth goes back to the oceans sooner or later. The snow melts and flows down as streams and rivers. Most of the rivers fall in seas, lakes, and oceans.

The lakes and ponds are filled by the rainwater. Some of the rainwater is absorbed by the soil. This water is lost in the process of evaporation and transpiration. The groundwater is the source for many open wells, handpumps, tube wells, and lakes.

The water cycle is an important phenomenon of returning water back to the oceans. The water from the oceans evaporates. This evaporated water condenses and falls back as rain. The water that falls on land flows into the rivers and ultimately falls into the oceans.

A single drop of water spends about 3,230 years in the oceans before entering the water cycle. The circulation of water between the ocean and land occurs continuously and maintains the supply of water on land.

Also read: Water Cycle

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