The Antarctic ozone hole was caused by excessive use of Freon in the past, and Freon was discharged into the air. A large number of ultraviolet rays will shine on the earth, the incidence of skin cancer will increase, and the temperature of the earth will also rise. Red tides occur in many waters because domestic industrial wastewater enters the waters, which is rich in nitrogen and phosphorus, leading to eutrophication, which will lead to the death of fish and shrimp and damage people's health through biological enrichment. The destruction of American virgin forests is man-made, and many trees are cut down. Many animals have been displaced, and some species have even become extinct.
Lop Nur, the Lost Fairy Lake ",that is to say, Lop Nur used to be a very beautiful lake, but now it has disappeared and turned into a desert. This is a tragedy of man-made destruction of the ecological environment. This reportage warns the world with a powerful voice that it is necessary to establish the environmental awareness of the whole people and do a good job in ecological protection.
Cut down trees
Dig river sand
Killing animals,
The causes of environmental pollution are mainly caused by human factors. Usually, a large number of "three wastes" discharged by people in production and life, unexpected accidents in some industrial and living facilities, untreated waste in hospitals, etc. will cause environmental pollution, and even cause harm in serious cases. In wartime, a large number of weapons are used to kill and destroy residents and residential areas, and even cause environmental pollution and destruction.
For example, urban air pollution causes air pollution, and the incidence of people is rising. Water pollution worsens the quality of water environment, and the quality of drinking water sources generally declines, threatening people's health and causing premature birth or malformation of fetus. Serious pollution incidents not only bring health problems, but also cause social problems. With the intensification of pollution and the improvement of people's awareness of environmental protection, disputes and conflicts between people caused by pollution have increased year by year.
It can be said that it is a great progress for human beings to pay attention to protecting the environment while pursuing their own development.
In ancient times, the relationship between man and nature was unequal. Human beings are weak, limited by nature everywhere, but unable to change nature. Therefore, it has become a rare quality for human beings to regard nature as an enemy and the world as an enemy. The spirit of fools has been praised for thousands of years.
With the advent of the industrial age and the continuous improvement of human science and technology, the relationship between man and nature has been reversed, and man has become a strong man, while "gentle nature" has become an easily injured object. High-purity chemicals, such as pesticides, paints and detergents, pose a great threat to the natural environment; Large-scale energy consumption has changed the composition of the atmosphere, thus changing the climate of the earth; With the improvement of sanitary conditions and the sharp increase of population, human activities have destroyed a large number of forests and wetland resources on the earth. As a result, "gentle nature" has become "ferocious nature", and everything imposed on it by human beings will eventually be returned to human beings. In areas where water and soil are polluted by high-purity chemicals, the incidence of deformed children and terminal diseases is much higher than that of normal people; Once the oil resources are exhausted, the quality of human life and the normal operation of society will inevitably encounter problems; Abnormal climate will inevitably bring floods or droughts, and famine will also be accompanied by various natural disasters. "Cruel nature" will make human beings weak again, and the relationship between human beings and nature will return to the starting point.