What are the causes of the harsh environment?

In general, the concentration and toxicity of pollutants naturally decrease over time, a phenomenon known as environmental self-purification. If the pollutants emitted exceed the self-purification capacity of the environment, the quality of the environment will deteriorate, endangering human health and survival. Environmental degradation reduces biological production and exacerbates environmental damage.

Common causes are: waste smoke, exhaust gas, waste water, waste residue and noise discharged from the factory; Waste smoke, exhaust gas, noise, dirty water, garbage discharged from people's lives; exhaust fumes and noise from vehicles; Agriculture uses a lot of chemical substances such as fertilizers, pesticides, herbicides, etc.; mine wastewater, waste residue; Machine noise, electromagnetic radiation.

carbon dioxide pollution; The main pollutant in the air is sulphur dioxide.

Nitrogen oxides, particulate pollutants, acid rain. Wait a minute.

Environmental pollution is caused by the discharge of a large number of harmful substances into the environment produced by human life activities and production activities; Specifically, it includes: air pollution, water pollution, greenhouse effect, noise pollution, solid waste pollution, etc

With the development of industrial production and the improvement of human living standards, the demand for fossil fuels such as coal, oil, and natural gas continues to increase, and they release a large amount of carbon dioxide gas after combustion. This is known as the "greenhouse effect".

Freon is the culprit of ozone layer destruction, Freon is a colorless gas or volatile liquid at room temperature, slightly fragrant, low toxicity, chemically stable Often used as a refrigerant, foaming agent and cleaning agent, widely used in household appliances, foam plastics, daily chemicals, automobiles, fire equipment and other fields

As follows:

1. Environmental damage! Pollution of the air (e.g. burning of garbage, war), pollution of water sources (e.g. chemical plants, paper mills).

2. Pollution of the ecological environment! Plants and animals face extinction (e.g., whaling, hunting of Asian elephants) and deforestation (e.g., clearing of trees, deforestation and farming).

3. The destruction of the entire earth's environment by war! The main ones: nuclear, biochemical, (conventional missiles** are not counted for the time being).

4. Request! People all over the world excavate and exploit various non-renewable resources of the earth (such as oil, coal).

Nature is the home of human life, and human survival and development must depend on the natural environment and natural resources. Due to the exploitation and utilization of nature by human beings, the original living environment has been changed, and the interdependence between man and nature has become an antagonistic relationship, the natural environment has been seriously damaged, the ecological balance has been broken, and resources have been overexploited.

Since China's reform and opening up, due to the extensive use of agricultural science and technology in agricultural production, agricultural science and technology have affected the natural environment of rural areas, the original ecology of rural areas has lost balance, the large-scale development of rural resources has caused serious waste, the relationship between man and nature has become the relationship between subject and object, the ethical order of harmonious coexistence between man and nature has been seriously damaged, and natural ecological ethics is facing a serious crisis.

Excessive population growth, the earth's various natural resources can not meet the needs of population growth, and can only be at the expense of natural resources, polluted air, polluted untreated water, a large number of heavy metals and various chemical pollutants discharged into the soil.

Environmental problems are mainly manifested in environmental pollution and ecological damage. Environmental pollution mainly refers to air pollution, water pollution, soil pollution, solid waste pollution, noise pollution, radioactive pollution, marine pollution, etc., and ecological damage mainly refers to soil erosion, land desertification, soil salinization, forest reduction, water depletion, species reduction, etc.

There are mainly the following concentrated behaviors:

1. Exhaust emissions.

It is a serious source of pollution of the atmospheric environment, and various exhaust gases emitted in the combustion and production process of industrial enterprises.

2. Sewage discharge.

Polluting surface water, such as amber and rivers, leads to poor water quality and even affects the function of water bodies; Polluting the soil, resulting in soil acidification, salinization, etc.

3. Deforestation.

destruction of primary forest resources; Failure to conserve water, resulting in reduced river flows; increased damage from drought and flood; Soil erosion is intensifying.

4. Excessive mining and beneficiation.

It has caused the destruction of land resources, led to the deterioration of the agricultural production environment, the imbalance of ecological balance, frequent floods and droughts, and affected the development of production in various industries.

5. Garbage siege.

6. Dry up and fish.

Draining the pond to catch fish is only for short-term interests, not for long-term planning.

7. Discard waste batteries.

The hazards of old batteries are mainly focused on the small amount of heavy metals contained in them, such as lead, mercury, cadmium, etc. These toxic substances enter the human body through various ways, and it is difficult to eliminate them after long-term accumulation.

8. Over-catching birds.

Mass deaths, reduced reproductive capacity, leading to extinction, population declines, leading to genetic defects.

9. Overexploitation of groundwater.

From a regional point of view, environmental problems in urban areas are mainly manifested in environmental pollution, and in rural areas, ecological damage is mainly manifested. From a global point of view, the environmental problems of developing countries are more serious than those of developed countries, first, developing countries are generally in the initial stage of economic development, while the population is growing rapidly, and the environment is under the dual pressure of development and population; Second, limited by the economic and technological level, developing countries do not have sufficient capacity to carry out environmental protection, and cannot solve environmental problems in a timely and adequate manner after they occur; Third, developed countries have taken advantage of the needs of some developing countries for economic development to transfer heavily polluting industries to developing countries. And some environmental issues are global.

The main causes of environmental problems are population pressure, irrational use of resources, and one-sided pursuit of economic growth.

The act of causing environmental damage is caused by human activities and better survival, and there is no human place, the environment is pure and natural. Wherever people go, they are polluted. Animals and plants themselves have dissolved into nature, and only humans are alien.

1. Dig river sand.

Over-exploitation of groundwater, over-exploitation and beneficiation, artificially destroying geological landforms, resulting in the deterioration of the natural environment.

2. Cutting down trees, destroying forests and wetlands, and causing abnormal climate change.

3. Hunting and killing wild animals.

The imbalance of the natural biological chain has led to the deterioration of the ecological environment.

4. Establish polluting factories that emit a large amount of polluting gases and cause air pollution.

5. Industrial wastewater is not up to standard, polluting water resources.

First, economic growth is still supported by high input, high consumption, high emissions and high pollution. According to reports, compared with developed countries, Guangdong's environment and economic coordinated development gap is very large, and the water consumption per unit of GDP is twice that of the United States, South Korea, and Mexico; The water consumption per 10,000 yuan of industrial added value is 10 times that of foreign advanced level and 4 times of the world average; Energy consumption per unit of GDP is twice that of Japan and ...... times that of the United States

Second, the discharge of sewage and waste gas is still increasing significantly. For example, last year, the province's annual sulfur dioxide emissions reached 10,000 tons, an increase over the previous year, but the installed capacity of completed desulfurization increased by only 5% compared with the previous year; The urban sewage treatment rate in the province is only 35%, the sewage collection pipe network is not perfect, and a large number of untreated domestic sewage and agricultural irrigation water are directly discharged into the rivers; The amount of urban domestic waste generated is growing at a rate of 10%, but most of them are simple landfills, no effective pollution prevention and control measures have been taken, and they cannot meet the standards stipulated by the state, causing secondary pollution to soil and water bodies.

Third, the climate is abnormal, and the self-purification ability of the environment is reduced. Last year, Guangdong experienced the worst drought in 40 years, and the climate was extremely abnormal, reducing the environmental self-purification capacity of urban air and river surface water.

Environmental pollution is caused by the discharge of a large number of harmful substances into the environment produced by human life activities and production activities; Specifically, it includes: air pollution, water pollution, greenhouse effect, noise pollution, solid waste pollution, etc

With the development of industrial production and the improvement of human living standards, the demand for fossil fuels such as coal, oil, and natural gas continues to increase, and they release a large amount of carbon dioxide gas after combustion. This is known as the "greenhouse effect".

Freon is the culprit of ozone layer destruction, Freon is a colorless gas or volatile liquid at room temperature, slightly fragrant, low toxicity, chemically stable Often used as a refrigerant, foaming agent and cleaning agent, widely used in household appliances, foam plastics, daily chemicals, automobiles, fire equipment and other fields

It can be said that there are all walks of life in the deterioration of the environment caused by man-made, medicine, electronics, agriculture, light industry, heavy industry, and life, which are the reasons for our getting worse and worse.

We can also feel the deterioration of the environment around us, with less and less sunny and cloudless weather, dusty roads, constant noises in our ears, rivers and lakes no longer clear in color, invasion of alien species, more and more diseases, and an increase in the deformity rate of children......Wait a minute.

Xie Zhenhua, head of the State Environmental Protection Administration, said that China's ecological environment situation is still grim, mainly due to the extensive economic growth model.

He said: Since the beginning of reform and opening up, China's economy has made great progress, but it has also paid a heavy price. The environmental problems encountered by developed countries in the course of 100 years of industrialization have occurred rapidly in China in just 20 years. Now we have to face the environmental problems caused by excessive consumption in developed countries, and the ecological damage caused by underdevelopment and poverty in developing countries.

Due to the irrational economic structure, the traditional mode of resource development and utilization has not been fundamentally changed, the idea of emphasizing development over protection and construction over management and protection is still widespread, and the phenomenon of sacrificing the ecological environment in exchange for immediate and partial interests is still serious in some areas. Rapid economic growth has put tremendous pressure on the ecological environment.

In addition to the above reasons, the ecological protection system is not smooth, the foundation is weak, and the strength is insufficient.

In addition, the people's awareness of environmental protection is not perfect, and economic interests are always the priority, which has led to many disasters. For example, sandstorms, desertification, water pollution, algae overflow, invasion of alien species, increased floods and droughts, and agricultural and industrial pollution.

For the sake of future generations, I think that at least from the new generation, we should pay attention to environmental protection, and do not wait until it is irretrievable to remember that we should have established a sewage treatment project at that time. The fact that global warming has become apparent, that people's original weather has begun to change significantly, and that our Taihu Lake has just erupted with blue-green algae is really shocking.

Environmental pollution refers to the phenomenon that due to human factors, pollutant substances enter the environment, so that the composition and state of the natural environment have changed, the structure and function have been destroyed, the environmental quality has deteriorated, the ecosystem has been destroyed, and the production and life of human beings have been harmed. Specifically, environmental pollution refers to harmful substances, mainly industrial"Three wastes"Pollution of the atmosphere, water, soil and organisms (exhaust gases, waste water and waste residues). Environmental pollution includes air pollution, water pollution, soil pollution, biological pollution and other pollution caused by substances and pollution caused by physical factors such as noise pollution, thermal pollution, radioactive pollution or electromagnetic radiation pollution.

Some heavy and light industries such as fertilizer factories, as well as food processing, paper industry, coal mining processing, petroleum refining, etc., are more likely to pollute the environment.

The main reasons for environmental degradation are:

1. The reason for the deterioration of the atmospheric environment is that there are more and more cars now, and automobile exhaust emissions seriously pollute the atmosphere; The air emitted from factories and air conditioners can also lead to the deterioration of the atmospheric environment.

2. The main reason for the deterioration of the water environment is the direct discharge of industrial wastewater and the direct discharge of domestic wastewater.

3. The deterioration of the soil environment is mainly caused by the pollution of solid waste, pesticides, heavy metals, etc.

The most important cause of environmental degradation is people, and all the activities generated by people may have an impact on the environment, such as our industry, our agriculture, our travel, and our excavation and burning of natural resources, all of which may produce some things that deteriorate the environment, including our air and water pollution, as well as the rapid change of the entire climate, which are related to human activities.

Therefore, we must first be ourselves and not do things that damage the environment.

1. Land pollution: The cleaning of garbage 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 and other human enemies.

2. Marine pollution: leakage from oil tankers and oil wells, pesticides and fertilizers used in farmland, sewage discharged from factories, acidic solutions flowing from mines; The cause of the poor environment of the earth Answer: Human beings continue to improve their quality of life while causing inevitable damage to the environment, big or small, over time the problem will be big, and nature will begin to retaliate against human beings, we will find that the earth's environment is bad!