The importance of water resources

The importance of water resources

1. People can't live without water. Modern medical measurement shows that the proportion of water in the main parts of human body is: brain 74.5%, bone 22%, kidney 82.7%, bile 97%, muscle 75.6% and blood vessel 83%. Water accounts for 7% of the total weight of the human body.

2. Plants and animals can't live without water. Rain and dew moisten the seedlings, and everything can't grow without water. Water is the basic unit of life and the basic condition for the occurrence, development and reproduction of life. ?

3. Adjust the climate. Water is an important component of the atmosphere. Although the atmosphere contains only one millionth of the global water volume, the cyclic interaction between the atmosphere and water determines the water circulation movement of the earth and forms a climate that supports living things. The water in the atmosphere helps to adjust the global energy balance, and the water circulation movement plays the role of energy transmission in different regions.

4. Water has the function of transporting materials. Water can transport a variety of materials and nutrients. There are two forms of water transport substances: dissolved minerals and whole substances. All kinds of particulate matter in the atmosphere can settle into water and then be transported by water. From this aspect, we can see that water can transport and spread environmental pollutants to farther and wider areas.

5. Water mill shapes the shape of the earth's surface. Flowing water creates and promotes the formation of land landforms, rearranges the surface landscape and forms deltas. Water is the key factor to form soil and also plays an important role in physical weathering of rocks.