Water conducts many important functions during its circulation around the Earth.

Water is always-moving substance. Water conducts many crucial functions while it circulates around the Earth. It brings nutrients to living things and help the movement of various substances. Lots of nutrients, which are crucial for the survival of lives and life activities, are melted in oceans. Rain and river water wash away nutrients, which are contained in rocks, into oceans. Water helps the circulation of such substances. The Earth is alive and relied on water. It is impossible if there is no light of the sun. Sunlight pulls ground water into the atmosphere. If water is too much in the atmosphere, then it returns to the surface of the Earth. Through its circulation, water distributes the energy equally and helps keep balances in the Earth. As the result, the Earth keeps healthy.
The harmony and balance that nature itself has made keep the Earth the place where living things can survive and thrive. Thus, the circulation of water has the same meaning as the circulation of lives.