How serious is the pollution of the earth 5

People have always thought that the sea, land and air on the earth are endless, so they have never worried about sending tens of millions of tons of exhaust gases to the sky and dumping hundreds of millions of tons of garbage into the ocean. Everyone thinks that the world is so big, what is this waste? We are wrong, in fact, although the earth is large (more than 6,300 kilometers in radius), but living things can only live in the range of 8 kilometers above sea level to 11 kilometers under the sea, and 95% of the creatures can only live in the middle of about 3 kilometers

Marine pollution: mainly leakage from oil tankers and oil wells, pesticides and fertilizers used in farmland, sewage discharged from factories, and acidic solutions flowing from mines; They pollute most of the ocean's lakes and cause damage not only to marine life, but also to birds and humans who can be poisoned by eating them.

Land pollution: garbage cleaning has become an important problem in major cities, and many of the tens of millions of tons of garbage every day cannot be incinerated or corrupted, such as plastic, rubber, glass, aluminum and other waste, which has become the number one enemy of urban sanitation.

Air pollution: This is the most direct and serious, mainly from the carbon monoxide and hydrogen sulfide emitted by factories, cars, power plants, etc., and people are exposed to these dirty air every day and contract respiratory or visual diseases. If we continue to ignore the warnings of the experts, we will surely fall to the point where there is no pure land to live in in the future.

1) Water pollution.

Our source of drinking water.

The pollution is very serious. According to the relevant survey data, only 10% meet the drinking water sanitation standards, about 20% basically meet the standards, and as many as 70% do not meet the drinking water standards. A city that uses groundwater for drinking water.

More than 90% of the groundwater is polluted to varying degrees, and the pollution is getting worse year by year. For example, 16 drinking water intake points in southern Jiangsu were tested and 154 organic pollutants were measured, of which dozens were chemical.

The compound exceeds the standard. The discharge of organic matter in industrial wastewater, especially chemical oxygen consumption, is increasing year by year, and the rivers flowing through major cities are generally polluted to varying degrees. Some rivers become typical sewage ditches. people in our country.

Surveys of the pollution status of 532 rivers show that 436 rivers have been polluted to varying degrees. The polluted lakes in China have reached the high trophic level of 63.6%, and the population in China is dense.

Almost all of the region's lakes and reservoirs are polluted.

Air pollution: A large amount of exhaust gases destroy the ozone layer and produce a hole, and the direct impact on human beings is that the incidence of cancer will increase. The pollution of water resources directly leads to the destruction of freshwater resources, the death of a large number of fish and marine life, and the long-term pollution leads to biological variation.

The inability to dispose of solid waste, polluted soil, white pollution, the earth will become a big garbage plant, etc.

1. Water pollution, pollutants into rivers, lakes, oceans or groundwater, reducing the use value and function of water bodies; 2. Air pollution, the air contains one or more pollutants, which will harm the lives of humans, plants and animals; 3. Light pollution, the impact of excessive light radiation on human life and production environment, including pollution caused by visible light and infrared rays; 4. Soil pollution, pollutants produced by human activities enter the soil and cause soil quality to deteriorate.

Among the types of earth pollution, environmental pollution causes direct damage and impact on ecosystems. Desertification and deforestation can also cause indirect harm to ecosystems and human society, and sometimes the harm of such indirect environmental effects is greater than the direct harm caused at the time, and it is more difficult to eliminate. For example, the greenhouse effect, acid rain, and ozone layer depletion are environmental effects derived from air pollution.

Greenhouse effect. At present, the global climate is rising, the glaciers of the Arctic Ocean are constantly melting, and the global sea level is constantly rising, which greatly threatens low-lying countries and regions. As the climate warms, extreme weather is increasing year by year, and once the glaciers in the Arctic Ocean melt, the consequences will be dire.

Acid rain. Acid rain is harmful to the environment in many ways: it acidifies waters and soils, harms crops and forests, and harms fisheries (fish disappear when the pH is less); Corrosion of buildings, factory equipment, and cultural monuments is also a danger to human health.

Therefore, acid rain can disrupt the ecological balance and cause great economic losses.

Water pollution: chemical wastewater, domestic sewage.

Air pollution: chemical exhaust gases, Qingchan Bridge toxic gases, car exhaust fumes.

Soil pollution: dry batteries, household waste.

industrial waste pollution, as well as the use of pesticides.

Noise pollution. Industry, building construction, etc.

Light pollution: The size of the city's lights at night.

Categories: Education, Science, >> Science & Technology.

Analysis: Human. Human beings are endlessly exploiting energy and using energy to destroy the earth's environment day by day.

If we ask what pollution is most harmful to human activities, it should be the exhaust gas of ore fuel and all kinds of garbage. The former pollutes the air, causes allergies and greenhouse gases to increase dramatically, changes in the environment and climate, and the gradual reduction or extinction of biological species. The latter directly affects all biological environments, including humans, especially industrial waste.

If you ask Yan Blind what pollution is the most terrible, of course, it is nuclear pollution. Not yet. But when there is already a nuclear ** on Earth that can destroy the Earth 100 times, can we expect it not to destroy it once?

Even a single accident is enough to take this earth back to ancient times.

Good question, man, I hope Mr. Bush can see it.