1. Water is an essential substance to sustain life, and all life activities are derived from water.

2. Water is an indispensable substance in human daily life.

3. Water can regulate the climate.

Other functions of water include: hydropower generation, shipping, bamboo and wood exile, climate regulation, beautifying the environment and other functions. Drink for life, nurture everything, cool, heat, dissolve, clean and synthesize in industry, irrigate and breed in agriculture, and develop water sports and entertainment.

Physiological significance of water

Water is necessary for normal metabolism of human body. Under normal circumstances, the human body excretes about 1.5L of water through the skin, viscera, lungs and kidneys every day. Children have 80% water, the elderly have 50% ~ 60%, and normal middle-aged people have 70%.

Water has many important functions in the body:

(1) water is an important part of cell protoplasm;

(2) Water acts as a solvent in the body to dissolve various electrolytes;

(3) Water plays a transport role in the body, which can transfer nutrients, metabolic wastes and endocrine substances (such as hormones).

Refer to the above content: Baidu Encyclopedia-Water