The harm of environmental problems, the harm caused by environmental pollution

How much do you know about the harm caused by environmental problems?

According to authoritative statistics, about 4.3 million people in China were diagnosed with cancer in 2015; 2.8 million people die from cancer, an average of 7,500 per day. What is even more terrifying is that morbidity and mortality rates are still rising.

There is a scientific consensus that nearly 90% of cancer causes are related to the environment and lifestyle.

The 1952 toxic smog incident in London and the photochemical smog incident in Los Angeles claimed thousands of lives.

From the 50s to the end of the 70s of the 20th century, China increased the area of desertification by an average of 1,500 square kilometers per year, and in the 80s, it increased to an average of 2,460 square kilometers per year, which is equivalent to the annual loss of the land area of a medium-sized county.

In 2000, the Danube River was polluted by heavy metals, which led to the near extinction of all life on both sides of the river.

The above summary is the most basic problems that environmental problems will bring us: carcinogenicity, smog, land desertification, and biological disasters caused by water pollution.

1.The harm of haze: Winter fog is known as the "winter killer", coupled with industrial exhaust gases, car exhaust fumes, dust in the air, bacteria and viruses in the air, these substances are mixed together and enter people's respiratory tract, which may cause acute respiratory infections (colds), acute bronchitis, and asthma induction.

1) Harm to agriculture: In the spring sowing season every year, seeds and fertilizers are blown away, seedlings are even uprooted, soil moisture is lost, and agricultural time is delayed; (2) causing grassland degradation, so that the dominant grass species suitable for livestock consumption are gradually reduced, or even completely lost; (3) Causing blockage of rivers, reservoirs and canals; (4) It will cause very terrible sandstorms.

Desertification**.

3.Hazards of water pollution: (1) Endangering human health.

Entering the human body through drinking water and food chain, some things will continue to accumulate in the human body, eventually leading to acute or chronic diseases, and even causing cancer; (2) Harm to industry and agriculture. Industrial water must be treated more expensively, resulting in waste. The requirements for food water are more stringent; (3) The eutrophication of water bodies will harm aquatic animals and plants, and eventually affect human beings.

Water pollution**.

Whether from the perspective of human development or the survival of future generations, environmental problems have always been the object of our attention, and lucid waters and gold mountains are invaluable assets. I hope that our environment is getting better and better, and the society is getting better and better!

Hazards to human health:

The harm of air pollutants to the human body is multifaceted, manifested as respiratory system damage, physiological dysfunction, digestive system disorders, nervous system abnormalities, mental decline, carcinogenesis, and disability. People call this smoke of disaster"Murderous smoke"。When the concentration of pollutants in the atmosphere is very high, it can cause acute pollution poisoning, or worsen the symptoms, and even kill thousands of people in a few days.

Harm to plants:

Air pollutants, especially sulfur dioxide and fluoride, are very harmful to plants. When the concentration of pollutants is very high, it will cause acute harm to plants, causing lesions on the surface of plant leaves, or directly causing the leaves to wither and fall off; When the concentration of pollutants is not high, it will cause chronic harm to plants, resulting in a decrease in plant yield and poor quality.

Hazards to the weather and climate:

This makes the air very turbid, blocking out sunlight and reducing the amount of solar radiation reaching the ground. Sulfuric acid rain can destroy large areas of forests and crops, corrode and break paper, textiles, leather products, etc., deteriorate metal anti-rust coatings and reduce protection, and also corrode and pollute buildings.

Extended Materials. Prevention method:

1. Discharge toxic gases such as sewage, waste gas, waste smoke, waste residue and other toxic gases from the factory.

2. Try not to use private cars when going out to reduce environmental pollution caused by automobile exhaust emissions.

3. Do not use disposable tableware to save paper.

4. Plant more flowers and trees, and do not cut down indiscriminately.

Characteristics of pollution:

1. Public nuisance, environmental pollution is not affected by regional, racial, and economic conditions, and all are harmed.

2. Latent, many pollution is not easy to find in time, and once it erupts, the consequences are serious.

3. Long-term, many long-term and continuous effects of pollution, endangering people's health and life, are not easy to eliminate.

The hazards of environmental pollution mainly include:

1. Marine pollution: due to the damage to the environment, coupled with the discharge of some domestic wastewater into the ocean in human production activities, the marine water resources have been seriously polluted;

2. Urban environment: If some garbage and other objects in urban life cannot be reasonably arranged, it may cause unnecessary impact on the urban environment;

3. Raise the temperature of the atmosphere: due to the industrial production, a large amount of waste heat is discharged into the air, which will make the temperature of the city higher than the temperature of the suburbs;

4. Human health: people mainly breathe oxygen in the air, if the pollutants in the air increase, people will inhale these pollutants into the body when breathing, so it will have a greater impact on health;

5. Plant impact: When the concentration of pollutants increases, it will cause chronic harm to plants, cause lesions on the surface of plants, or make the leaves of plants fall off. When the concentration of pollutants is not too high, it will cause the leaves of the plant to fade, thus affecting the quality of the plant;

6. Animal impact: The impact of environmental pollution on animals is still relatively large, for example, when the water source is polluted, the health of animals will also have a certain impact;

7. Climate impact: environmental pollution may increase the amount of substances in the atmosphere, thereby causing global warming, resulting in a series of harms, such as glacier melting, sea level rise, etc.;

8. Increase precipitation: In environmental pollution, a lot of particulate matter will be produced, which can condense water vapor, thereby increasing the amount of precipitation in the atmosphere;

9. Noise pollution: In fact, the scope of environmental pollution is relatively wide, including noise pollution, which will affect people's normal rest.

Environmental problems include global warming, ozone layer depletion, acid rain, freshwater resource crisis, energy shortage, sharp decline of forest resources, land desertification, accelerated extinction of species, garbage disaster, toxic chemical pollution and many other hazards. Environmental problems usually refer to the phenomenon of environmental quality decline or ecological imbalance caused by nature or human activities acting on the environment around people, and such changes in turn have an adverse impact on human production and life.

Environmental problems can be divided into two categories: one is caused by damage and pollution caused by natural factors. Such as:

Volcanic activity, natural disasters such as storms, tsunamis, etc., endemic diseases caused by the uneven distribution of elements in the environment, and radiation sickness caused by radioactive substances in nature. The other category is environmental pollution caused by human factors and the destruction of natural resources and ecological environment. Various pollutants (or pollution factors) generated in human production and living activities enter the environment, exceeding the allowable limit of environmental capacity, causing the environment to be polluted and damaged; When human beings develop and utilize natural resources, they exceed the carrying capacity of the environment itself, which deteriorates the quality of the ecological environment, and sometimes the phenomenon of depletion of natural resources occurs, which can be attributed to environmental problems caused by man-made.