Please give about the consequences of polluting the seawater!!!!!!!!!!!!!!!!!

Sewage, sludge, oil and chemicals flow into the sea. In many seas, the dumping of oil-mixed sewage is illegal, but it still happens, and the real oil disaster occurs when a giant oil tanker leaks or sinks. Nowadays, we try to use chemicals to precipitate oil in water for the purpose of removing oil.

The dumping of chemical and radioactive waste into the ocean has been going on for many years. Containers will one day corrode and harmful substances will enter the seawater. We don't know much about the circulation of deep and surface water, and the process may be faster than we previously thought.

As a result, harmful substances will diffuse into the biologically active water columns.

1.Red tide. Red tide is the sudden proliferation and aggregation of certain tiny phytoplankton, protozoa or bacteria in the water body under certain environmental conditions, causing the discoloration of the water body for a period of time within a certain range.

Usually the color of the water body is red, yellow, green, and brown depending on the number and type of red tide organisms.

Although red tides have existed since ancient times, with the rapid development of industrial and agricultural production, water pollution has become increasingly serious, and red tides have become increasingly serious. Since it was first reported in 1933, there have been 194 large-scale red tides in China until 1994, including only 4 before the 60s and 157 after 1990.

2.Endemic.

Environmental pollution and human health.

The impact of the natural environment on the human body.

Due to the composition of the geographical environment - endemic diseases.

Endemic goiter.

Iodine-deficient goiter.

Hyperiodine goiter - Hokkaido, Japan

Kettin's disease. Endemic fluorosis.

Keshan disease. The harm of environmental pollution to human health.

Acute Hazard - London Smog (1952) - Four thousand dead.

Chronic hazards - water conservation diseases, pain diseases.

Long-term hazards. Teratogenicity.

Mutagenicity.

Carcinogenicity. Public nuisance.

Human-inflicted. Factors that impair health are complex.

It has the characteristics of long-term and successive onset.

3.Fisheries are affected.

As a special large body of water, the ocean has various forms of pollution in rivers and lakes, and the pollution in some aspects is even more serious. Some of the more serious forms of marine pollution are: oil pollution, eutrophication pollution, and toxic substance pollution.

There are many ways for the ocean to be polluted: for example, the pollutant substances in the atmosphere settle into the ocean, the polluted river water flows into the ocean, the coastal cities and factories directly discharge untreated domestic sewage and industrial wastewater into the sea, the solid waste is piled up on the shore beach or dumped into the ocean, the offshore oil and gas leakage into the sea during exploitation, the wastewater and garbage discharged by the sea transport ships, and the accidents of oil carriers bring huge disasters to the ocean. Protect the oceans, the United Nations Declaration on the Human Environment adopted at the United Nations Conference on the Human Environment in 1972, which states:

States should take all possible steps to prevent pollution of the oceans and seas by substances that could endanger human health, damage living resources and marine life, damage the comfort of the environment or impede other legitimate uses of the oceans. "The Convention on the Law of the Sea was signed in December 1982. However, the "declaration", "convention" and legal provisions alone cannot slow down the damage to the oceans, and now that the sea has shown us a "yellow card", we must establish a correct awareness of the ocean.

First, we must not only take from the ocean, but also make efforts to protect and develop the resources of the ocean. Clause.

Second, we must protect and manage the oceans for ourselves and future generations. Minimize the amount of pollutants entering the ocean. Domestic sewage and industrial wastewater must be treated to meet the discharge standards before they can be discharged.

Establish a fixed dirt-holding field. Places with the least impact on the marine ecological environment should be selected as pollution sites in a planned manner, and strict regulations should be formulated to ensure that pollution is controlled to a minimum extent.

1. Pollution caused by ships What is pollution caused by ships, which refers to the destruction of the balance of marine ecosystems due to ship manipulation, marine accidents and dumping at sea through ships, which cause all kinds of harmful substances to enter the ocean. Characteristics of pollution caused by ships: (1) Various pollutants are introduced into the ocean through ships.

2) The entry of polluting substances into the ocean is due to human factors rather than natural factors, that is, the polluting behavior is subjectively manifested as human intention or negligence. (e.g., tank washing sewage and engine room sewage discharged into the ocean without treatment) (3) After the pollutants enter the ocean, they cause or may cause damage to the marine ecosystem.

The disruption of the water cycle directly affects freshwater resources.

Polluted oceans.

The oceans have long been heavily polluted by the full-scale invasion of ignorant humans. Mankind continues to use the old tactics of "exploitation-plunder-destruction" practiced on land to the last frontier of the earth, the ocean.

The U.S. discharges more than 20 billion tons of sewage into the sea every year, and more than 70 million tons of industrial waste into the sea. Japan discharges more than 13 billion tons of sewage into the sea, and the CIS discharges more than 3 million tons of sewage into the Baltic Sea every day. China also discharges 10 billion tons of sewage into the ocean every year, and in July 1996, ** TV reported that there are more than 200 sewage outlets along China's coast, which discharge sewage into the sea day and night, causing serious pollution of coastal waters and fishing grounds

There are no more fish!!

The fish are gone, and the red tide is coming. With the discharge of a large amount of nutrient-rich substances such as nitrogen and phosphorus into the ocean by rivers, the water body in the sea area is rich in oxidation, resulting in the overgrowth of some tiny marine organisms, seaweed, thus forming red tides. These overblooms of algae consume a lot of oxygen, leaving a large number of marine organisms to death due to hypoxia; Some algae can also clog the gills of fish, suffocating them to death; Other algae can secrete toxins that poison marine life, or invade shellfish and remain for a period of time, and if eaten by humans, they will be poisoned and cause death.

Even now, the ocean is seriously polluted by the leakage and discharge of sewage from shipping, the sewage discharged from land, the waste dumped into the sea, and the exploitation and destruction of marine minerals. Overfishing has greatly reduced marine life, endangered and extinct. And a large number of marine creatures that humans do not know much about have quietly disappeared.

There are also all kinds of synthetic substances that do not come from nature, and the biosphere cannot be decomposed, even if the oceans themselves claim to be powerful in purification.

Severe pollution, a sharp decline in species, and frequent red tides have all caused great disasters in the oceans. According to the famous French scholar Chaca Iscowas, "in the past 50 years, thousands of species of marine life have been dying out without a trace due to the pollution of the world's oceans, and this process has been intensified especially in the last 20 years."

If the ocean space continues to be polluted, it will have serious consequences for humanity, and if the ocean dies, humanity will cease to exist. ”

When I got home, I pouted and talked about it, and when I got home, I was even hotter than a dozen people who were yellow and gambling and drugs, and I was afraid of me.

December 18 07:22 Environmental pollution refers to the phenomenon of disturbance and damage to the ecosystem caused by substances harmful to the ecosystem after entering the environment, referred to as pollution. Specifically, harmful substances or harmful factors enter the environment and diffuse, migrate and transform in the environment, and interact with the elements of the ecological system, so that the structure and function of the ecosystem change, and have an adverse impact on the survival and development of human beings and other organisms.

For example, due to the combustion of fossil fuels, the concentration of particulate matter and SO2 in the atmosphere increases, which endangers the health of humans and other organisms, and at the same time, it will corrode materials and cause losses to human society; The discharge of industrial wastewater and domestic sewage deteriorates the quality of water bodies, endangers the survival of aquatic organisms, and makes water bodies lose their original ecological functions and use values.

In addition to the direct damage and impact of environmental pollution on the ecosystem, the accumulation and migration of pollutants will also cause a variety of derived environmental effects, causing indirect harm to the ecosystem and human society, and sometimes the harm of this indirect environmental effect is greater than the direct harm caused at that 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. This kind of environmental effect derived from environmental pollution has a lag, and is often not easy to detect or predict at the time of pollution, but once it occurs, it means that environmental pollution has developed to a considerable extent.

Of course, the most direct and easily felt consequence of environmental pollution is to reduce the quality of the human environment and affect the quality of human life, physical health and production activities. For example, air pollution in cities causes air pollution, and people's morbidity increases. Water pollution deteriorates the quality of the water environment, and the quality of drinking water sources generally declines, threatening people's health, causing premature birth or malformation of the fetus. Serious pollution incidents not only cause health problems, but also social problems.

With the intensification of pollution and the improvement of people's environmental awareness, the disputes and conflicts among people caused by pollution are increasing year by year.

At present, environmental pollution problems have occurred to varying degrees in the world, and the aspects with global impact include atmospheric environmental pollution, marine pollution, and urban environmental problems. With the globalization of the economy and the world, environmental pollution is also increasingly internationalized, and the transboundary transfer of hazardous wastes in recent years is a prominent manifestation in this regard.

The serious socio-economic impact of water pollution.

1.The safety of drinking water for urban and rural residents is seriously threatened.

Due to the serious pollution of China's water environment, the drinking water safety of urban and rural residents is threatened. According to the survey statistics of the health department, some people in China drink substandard water. In 1989, the State Environmental Protection Administration organized a survey on the protection of drinking water sources in key cities across the country, and found that 48% of surface water sources and 20% of underground water sources did not meet the standards.

The social problems caused by the pollution of water sources are quite prominent. A typical example is that in 1994 and 1995, water pollution accidents occurred in the main stream of the Huaihe River, causing millions of people in Huainan, Bengbu, Xuyi and other cities and counties to go without water for a period of time, and the local people reacted very strongly. In recent years, cyanobacteria have occurred frequently in Taihu Lake, which has made it difficult for Wuxi waterworks to obtain water, and some water plants have stopped production.

Many areas in the Haihe River basin have become "sewage counties".", "Sewage Township."", the local people have difficulty drinking water.

2.It will have a serious impact on industrial and agricultural production.

China is a country with relatively poor water resources, and its per capita water resources are equivalent to one-quarter of the world's per capita share, ranking 88th in the world. With the development of industry and agriculture and the improvement of people's living standards, the contradiction of water shortage has become increasingly tense. The increasingly serious water pollution has further exacerbated the contradiction of water shortage.

The vast areas in the Liaohe River Valley, the Haihe River Valley, and the Huaihe River Basin are already the most serious areas of water shortage in China, and serious water pollution has sharpened the contradiction of water shortage in the localities and caused serious losses to industrial and agricultural production. In addition, due to the shortage of water resources, seven cities and regions have been using sewage for irrigation for many years, and the area of sewage irrigation in the Haihe River basin alone has reached 10 million mu. Long-term sewage irrigation has polluted the soil in the sewage irrigation area, so that the crops have a certain amount of residual toxicity, and some are even inedible.

Water pollution has also had a serious impact on fisheries, with some heavily polluted sections of rivers already extinct.

3.It poses a serious threat to the health of the people.

In areas with serious water pollution, on the one hand, the safety of drinking water is threatened, and on the other hand, long-term pollution irrigation has caused pollution of surface water, groundwater, soil fill, agriculture, animal husbandry and fishery products, and damage to the agricultural ecological environment, which has posed a threat to human health. According to the results of the health census of residents in some areas, the incidence of intestinal diseases, the incidence of cancer, and the incidence of congenital congenital deformation and malformation of infants in the polluted areas were significantly higher than those in the control areas.

4.Water pollution disputes across administrative regions are becoming increasingly acute.

Serious water pollution has caused frequent water pollution accidents in some areas, which has led to many pollution disputes, especially water pollution disputes across administrative regions. Taking provincial water pollution disputes as examples, such as the pollution dispute between Dezhou in Shandong Province and Wuqiao in Hebei Province, the pollution dispute between Qingyuan in Zhejiang Province and Songxi in Fujian Province, and the pollution dispute between Wujiang in Jiangsu Province and Jiaxing in Zhejiang Province, these disputes have directly affected local social stability.

Causes of the formation of seawater pollution:

According to our investigation, industrial wastewater and domestic waste are discharged into the sea without professional treatment, which will cause serious water pollution. The heavy use of chemical fertilizers and pesticides can also pollute water ......

In order to save trouble, people often throw garbage in the clear river, making the water dirty and smelly, and becoming a stinky ditch. It seriously polluted the surrounding environment and air, causing three losses.

Some people often casually throw disposable lunch boxes, disposable plastic cups, and white plastic bags into the river, and then leave. As long as the wind blows, plastic products will fly around, blowing into the water and on the branches, often unable to move, and over time, the pollutants in it will penetrate into the deep water. Water will be polluted, and it will also cause white pollution.

Some stalls selling vegetables, after buying vegetables, left some bad vegetables, often thrown aside, no longer care, some families living by the river, often also throw some bad vegetables into the water, in the long days to come, the stinky vegetables rot, it seriously pollutes the water resources, so that the river becomes a stinky ditch.

Most of the oil and wastewater discharged from the ships poisoned the fish. Some factories that use water discharge dirty water back into the river after using the water, which quickly pollutes the water resources, and some factories discharge the pigments into the river, which pollutes the water resources even more.