Air pollution leads to human respiratory diseases, leading to an increase in population mortality. The mortality rate of lung cancer in heavily polluted areas of Chongqing is increasing year by year, exceeding 50 people/65,438+10,000, which is 4.7 times that in relatively clean areas. The mortality rate of lung cancer in individual blocks in Changsha is as high as 94 .36/65,438+10,000.
People didn't expect the negative impact of highly developed industries, and took precautions against disadvantages, which led to three global crises: resource shortage, environmental pollution and ecological destruction. Environmental pollution refers to natural or man-made destruction, adding certain substances to the environment, which exceeds the self-purification ability of the environment and causes harm. (or due to human factors, the environment is polluted by harmful substances, which adversely affects the growth and reproduction of organisms and the normal life of human beings. Due to human factors, the composition or state of the environment changes, and the quality of the environment declines, thus disturbing and destroying the ecosystem and the normal production and living conditions of human beings.