Water and Its Importance Notes

• Water is everywhere, and it is very important to the Earth and the life inhabiting it, including us.
• Our Earth seems to be unique among the other known celestial bodies.
• It has water, which covers three-fourths of its surface and constitutes 60-70 wt % of the living world.

97% oceans, 3% fresh water

• Only 1% of the water available is used by the organisms on Earth.

• Human body is made up of two-thirds of water and one-third of solid matter.
• The average adult body weight is of 55 to 75% water.
• A newborn baby’s weight is of 74% water.
• Every activity in the body of living organisms is propelled by water. It is the water, which is responsible for two third of activity in the body.
• Other than consuming water for survival, human beings also use water for a wide variety of purposes, ranging from maintenance of hygiene to production of energy. 

Uses of Water: