The importance of water resources to us.

Water is the source of human life, accounting for 70% of the total weight of human body, and animals and plants cannot live without water. Water is the basic unit of life and the basic condition for the development and reproduction of life. Water is also an important part of the atmosphere, which can adjust the climate by evaporation and then forming rainfall.

The importance of water resources to us.

Water resources refer to water resources that can be used or can be used. 72% of the earth's surface is covered with water, but fresh water resources only account for 0.5% of all water resources.

Natural water resources include river runoff, groundwater, snow and glaciers, lake water, swamp water and seawater. According to water quality, it can be divided into fresh water and salt water.