Talk about the uses of water, its benefits, and its uses and disadvantages

What are the benefits and disadvantages of water.

The benefits of water: Sixty percent of your body is water, and on earth, if you have water, you will have life. All life activities originate from water.

The lifeblood of the crops, grab a handful of plants with your hands, and you will feel wet and cold, which is because of the water. Plants contain a lot of water. Water, which participates in a series of important links in the production of industrial and mining enterprises, plays an important role in manufacturing, processing, cooling and separation, purification, air conditioning, washing, etc., and is known as the blood of industry.

The disadvantages of water: When a storm comes to nature, the storm will turn the water of the river into a catastrophe - a flood. Floods drown crops and cause us a lot of economic losses.

If the flood is even more severe, it will flood the buildings and many people will die, which will seriously affect our lives. When the flood waters receded, some of the garbage washed away by the flood water was on the ground, so let's take care of it. Look

The use of water: firstly, water is a substance necessary for the normal metabolism of the human body, accounting for about 70% of the normal human body weight; Water regulates the climate, and without it, the Earth's climate might not be suitable for human life. Water is also important for agriculture, with which all kinds of crops can be irrigated and grow normally; In industry, light industry, heavy industry, energy industry, etc., all need to use water resources. Water is needed everywhere in life, such as cooking, washing, etc.

Water is one of the most common substances on Earth. 71% of the Earth's surface is covered by water. It is an important resource for the survival of all life, including inorganic chemistry and human beings, and it is also the most important component of living organisms.

Although water is present in small amounts in the air, it is an important component of the air. Pure water is a very weak electrolyte with very weak electrical conductivity. Water in daily life has more anions and cations due to the dissolution of other electrolytes, so it has more obvious conductivity.

Water is a colorless, tasteless, and odorless liquid at room temperature. Water is a substance necessary for the normal metabolism of the human body, and under normal circumstances, the body has to excrete water through **, internal organs, lungs and kidneys every day to ensure that toxins are excreted from the body. Children have 80% water in their bodies, older people have 50 to 60% water, and normal middle-aged people have 70% water in their bodies.

Water is an important component of cellular protoplasm, and water plays a role in transporting nutrients, metabolic wastes, and endocrine substances (such as hormones) in the body.

Water is one of the most common substances on Earth and is known as the "source of human life". With the rapid development of industry, our drinking water sources and surface water have been polluted to varying degrees, and water resources are scarce. For the sake of human survival and development, it is necessary to do a good job in protecting water resources, vigorously advocate water conservation, and cultivate the people's awareness of water conservation.

1. Agricultural water: all kinds of irrigation water, animal and plant water.

2. Industrial water: light industry, heavy industry, mechanical engineering, soil and land engineering construction engineering, high-tech industry, and energy industry must all use water resources.

3. Urban water: Villages need water, living things need water, and human life also needs water.

4. Desert irrigation water: Desertification is an important and difficult issue in the world, the cause of desertification lies in the loss or lack of water, so in order to solve the problem of desert destruction, it is necessary to have sufficient water to irrigate and maintain water.

5. Sightseeing water: The beautiful scenery and sightseeing potato carrying area all need to use water. Fountains (including **fountains) become one of the features with jets of water.

The opposite of chemistry. From a chemical point of view, water can be used as a solvent, and water is used as a component when a chemical reaction takes place.

Physical aspects. From a physical point of view, water can be used as a lubricant, but also as a coolant, and so on.

Drinking. In life, the role of water is mainly for drinking, for example, people should drink enough eight glasses of water every day.

Cleaning effect. Water is used for washing clothes, mopping floors, cleaning glass, etc., and the main role of water is to "clean".

Pharmaceutical. Water is also needed when making medicines, which shows how important water is in our lives, and everyone should save water.

1. Water has a regulating effect on climate.

2. Water is an important part of all living organisms. Water in the human body accounts for 70% of body weight; Water is essential for sustaining life.

3. Essential substances for the daily life of human beings on the water. Such as cooking, washing, bathing, cleaning, etc.4, industrial production is inseparable from water. Such as raw material water, product treatment water, boiler water, washing water, cooling water and so on.

5. Water conservancy is the lifeblood of agriculture. Agricultural production requires a large amount of water for irrigation.

3 4 percent of the earth's surface is covered by water, but the available freshwater accounts for only the total amount of water stored in the world, and most of it is still distributed in polar glaciers and snow caps, mountain glaciers and permafrost that are difficult to use. grams of water used only approx. In addition, with the rapid development of modern industry, a large number of wastewater is discharged, which significantly pollutes the natural water system, and the water quality generally declines, and the fresh water available for safe use is increasingly insufficient.

Saving water, preventing water pollution, and protecting water resources is an important basic national policy at present!