Water has three main functions on the human body:

It plays an important role in forming human tissues. The water in the human body is collectively called body fluid. It is concentrated in cells, between tissues and in various pipes. It is an important substance that constitutes cells, tissue fluid, plasma, etc.

Supplement nutrition and participate in various metabolic functions of the body. Drinking water contains many rich minerals, such as calcium, magnesium, iron, copper, chromium, manganese and other elements. Appropriate content of these elements is beneficial to human health. At the same time, water can also help the body digest food, absorb nutrients, eliminate waste, participate in regulating the acid-base balance and body temperature in the body, and act as a lubrication between various organs.

The media role of transportation. Water serves as the medium for all chemical reactions in the body and the medium for the transportation of various nutrients and substances.

Water is necessary for the life of all living things. Sixty to seventy percent of the weight of the human body is

water. The daily water requirement is about three hundred percent of the body weight; other animals and plants also contain more than five percent water in their bodies.

Water is a necessary condition for national development. Water plays an important role in commercial activities, industry, manufacturing, agricultural irrigation,

aquaculture, water power and shipping. Population and culture

Developing cities are formed in places with abundant water supplies.