An essay on protecting the environment

People always think that the oceans, land and air on the earth are endless, so they never worry about discharging tens of millions of tons of waste gas into the sky and dumping hundreds of millions of tons of garbage into the ocean. Everyone thinks the world is so big. What kind of waste is this? We were wrong. In fact, although the earth is large, creatures can only live in the range of 8 km above sea level to the seabed 1 1 km, while 95% of creatures can only live in the middle of 3 km. People have wantonly polluted this limited living environment from three aspects. ?

Marine pollution: mainly crude oil leaked from oil tankers and oil wells, pesticides and fertilizers used in farmland, sewage discharged from factories and acidic solutions from mines; They pollute most marine lakes. Therefore, not only marine organisms are harmed, but birds and humans may also be poisoned by eating these organisms. ?

Land pollution: garbage disposal has become an important issue in major cities. Many of the tens of millions of tons of garbage every day cannot be burned or decomposed, such as plastics, rubber, glass, aluminum and other wastes. They have become the number one enemy of urban health. ?

Air pollution: this is the most direct and serious, mainly from carbon monoxide and hydrogen sulfide released by factories, automobiles and power plants. Every day, people will suffer from respiratory or visual organ diseases because of contact with these dirty air. If we still ignore the warnings of experts, we will definitely fall to the point where there is no half an inch of pure land to live in in the future.

Environmental pollution refers to the phenomenon that human beings directly or indirectly discharge substances or energy that exceed their self-purification ability to the environment, thus reducing environmental quality and adversely affecting human survival and development, ecosystems and property. Specifically, it includes: water pollution, air pollution, noise pollution and radioactive pollution. Water pollution refers to the change of chemical, physical, biological or radioactive pollution characteristics of water body due to the intervention of some substances, thus affecting the effective use of water, endangering human health or destroying the ecological environment, resulting in the deterioration of water quality. Air pollution refers to the phenomenon that the concentration of pollutants in the air reaches a harmful level, which destroys the ecological system and the conditions for the normal survival and development of human beings and causes harm to people and creatures. Noise pollution refers to the phenomenon that the environmental noise generated exceeds the national environmental noise emission standard and interferes with the normal work, study and life of others. Radioactive pollution refers to the appearance of radioactive substances or rays exceeding the national standards on the surface or inside of substances, people, places and environmental media due to human activities. For example: exceeding the national and local pollutant discharge standards, discharging pollutants in excess of categories, quantities and concentrations; Loading and transporting oil or toxic goods without taking measures to prevent spillage and leakage, causing the goods to fall into the water and cause water pollution; Illegal discharge of toxic and harmful substances into the atmosphere, causing air pollution accidents, and so on.

With the development of science and technology and the improvement of people's living standards, environmental pollution is also increasing, especially in developing countries. Environmental pollution is becoming one of the common topics in the world.

Due to people's insufficient expectation of the negative impact of highly developed industries and unfavorable prevention, three global crises, namely, resource shortage, environmental pollution and ecological destruction, have resulted. Humans constantly discharge pollutants into the environment. However, due to the diffusion, dilution, redox and biodegradation of atmosphere, water and soil, etc. The concentration and toxicity of pollutants will naturally decrease, which is called environmental self-purification. If the discharged substances exceed the self-purification capacity of the environment, the environmental quality will change adversely, endangering human health and survival, which will lead to environmental pollution. ?

Environmental pollution will reduce biological yield and aggravate environmental damage.

Environmental pollution sources mainly include the following aspects:

1) Waste smoke, waste gas, waste water, waste residue and noise discharged by the factory;

2) Waste smoke, waste gas, noise, stolen water and garbage discharged in people's lives;

3) Exhaust gas and noise emitted by vehicles (all fuel vehicles, ships, airplanes, etc.). );

4) Water from farmland irrigated with chemical substances such as chemical fertilizers, pesticides and herbicides.

five

) Mine wastewater and waste residue.

Is the harm of water pollution self-evident? Water pollution and water quality deterioration have brought serious environmental protection problems to human health, human life and production, which is the biggest problem faced by human beings in modern life. To solve this problem, we must start from the foundation.

First of all, it is necessary to carry out a lot of publicity to improve people's awareness and understanding and strengthen environmental awareness.

Secondly, we should recycle waste and reduce the felling of forest trees. We should also strengthen the control of white pollution and use less plastic products.

Finally, what should we do about cleaning? Improve. Make the city look cleaner.

For the sake of the earth's tomorrow, we must work hard and protect the environment from now on. Here we put forward the following suggestions:

Carrying out garbage sorting and bagging can not only reduce the workload of sanitation workers, but also make better use of waste, reduce pollution and save resources.

When buying food, use less plastic bags and try to use bamboo baskets.

Try to use refill pens to reduce the waste and rubbish of ballpoint pen shells.

Try not to use disposable lunch boxes when eating out.

Sowing green means sowing the hope of excess garbage and environmental problems. Garbage recycling and comprehensive utilization (II) Science in the bathroom?

Drink pure water?

Nowadays, drinking water is becoming a trend. Although the media has introduced the disadvantages of drinking water more than once, the drinking water aquarium is still expanding day by day.

Drinking water not only refers to pure water, but also includes mineral water, distilled water and even space water. However, the tap water we drank from childhood has become relatively non-potable water. We don't rule out that drinking water is popular at present, and speculation has played a certain role, but it reflects that the current water pollution has reached an inedible level.