Air pollution harms humans
The harm of air pollutants to the human body is multi-faceted. The main manifestations are respiratory diseases and physiological dysfunction, as well as mucosal tissues such as the eyes and nose are irritated and sick. It is a chronic factor causing asthma in the elderly, and the lack of lungs leads to physical decline.
When the concentration of pollutants in the atmosphere is high, it can cause acute pollution poisoning, or worsen the condition, and even kill thousands of lives in a few days. In fact, even if the concentration of pollutants in the atmosphere is not high, the human body will breathe this polluted air for years, causing diseases such as chronic bronchitis, bronchial asthma, emphysema and lung cancer.
Air pollution affects climate
The effects of atmospheric pollutants on weather and climate are very significant and can be explained in the following aspects:
1. Reducing the amount of solar radiation reaching the ground: A large amount of soot particles emitted from the factory, power station, automobile, and home heating equipment into the atmosphere make the air very turbid, obstructing sunlight, and reducing the amount of solar radiation reaching the ground. According to observations, in the days when smoke is not scattered in large industrial cities, the amount of sunlight directly shining on the ground is reduced by nearly 40% compared to the days without smoke. Cities with severe air pollution, every day, will cause people, animals and plants to grow and develop due to lack of sunlight.
2. Increasing atmospheric precipitation: Particles discharged from large industrial cities, many of which have the function of water condensation nuclei. Therefore, when there are other precipitation conditions in the atmosphere to match it, precipitation weather will occur. In the downwind areas of large industrial cities, precipitation is more.
3. Acid rain: Sometimes, the rainwater falling from the sky contains sulfuric acid. This acid rain is a pollutant in the atmosphere. Sulfur dioxide is oxidized to form sulfuric acid, which is formed by the precipitation of nature. Sulfuric acid rain can destroy large areas of forests and crops, and can cause corrosion of paper products, textiles, leather products, etc., which can deteriorate the metal anti-rust paint and reduce the protective effect, and also corrode the pollution of buildings.
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