What are the top 10 environmental crises in the world?

The greatest threat comes from the United States.

1. Over-exploitation of natural resources: Deforestation leads to forest fires, and over-exploitation of groundwater and mineral resources leads to land subsidence. As a result, many creatures have suffered a catastrophe.

2: Biodiversity, human over-hunting of wild animals, over-construction and development, leading to land desertification. Many creatures have lost their homes and are fishing for food.

In the Faroe Islands of Denmark, the killing of whales and dolphins is regarded as entertainment, and the custom has led to major disasters in the marine ecology.

3: Too much garbage. Although human society has entered a highly developed era, due to the excessive amount of domestic garbage, white pollution accumulates, and untreated sewage and waste gas are discharged. Wind energy can get the birds involved, causing most of the birds to die after passing by.

4: Nuclear Contamination and War. The United States and the Soviet Union were the most nuclear-contaminated countries in the world.

The Soviet Union has greatly harmed Kazakhstan, and the United States has conducted nuclear tests all over the world. Japan's nuclear leakage into the Pacific Ocean may lead to the reduction or even extinction of most of the map organisms in the Pacific Ocean, and it will also cause nuclear radiation hazards to itself and coastal countries. The world war has degraded the land, over-deforestation in Poland, and an ecological crisis in the Baltic Sea.

5: Industrial pollution. Industrial pollution has caused the average temperature of the planet to rise, glaciers to melt, and many countries are already suffering from rising sea levels.

6: Zoo. Humans capture wild animals in zoos for the sake of economy, causing animals to lose their ability to survive and destroying the ecological balance.

7: Water depletion. Excessive use of water resources, leading to water scarcity.

8: Over-cultivation. Destroying forests for food and turning them into arable land leads to land degradation.

9: Light pollution.

The earth is the only home for mankind, and without it, humanity will have nowhere to go, and UN Secretary-General António Guterres warned that the next 10 years will be humanity's last chance to save itself.

Environmental protection information (more complete information in the link).

1. Top 10 global environmental issues.

1. Climate warming.

2. Ozone layer depletion.

3. Biodiversity is decreasing.

4. Acid rain spreads.

5. Forests are declining.

6. Land desertification.

7. Air pollution.

8. Water pollution.

9. Marine pollution.

10. Solid waste pollution.

Second, the state of the environment in our country.

1. Air pollution is soot-type pollution, with dust and acid rain being the most harmful, and the degree of pollution is intensifying.

2. Acid rain is mainly distributed in the south of the Yangtze River, the east of the Qinghai-Tibet Plateau and the Sichuan Basin. Acid rain is the most polluted region in central China.

3. The waters of rivers, lakes and reservoirs are generally polluted to varying degrees, except for some inland rivers and large reservoirs, the pollution has become an aggravating trend, and the water pollution near industrially developed cities and towns is particularly prominent.

4. Among the seven major river systems (Pearl River, Yangtze River, Yellow River, Huai River, Hailuan River, Liao River, and Songhua River), the Yellow River Basin, Songhua River, and Liaohe River Basin are seriously polluted.

5. Total phosphorus and total nitrogen pollution in large freshwater lakes are widespread, and eutrophication is serious.

6. The Bohai Sea and the East China Sea are heavily polluted in the four major sea areas, while the South China Sea is lighter.

7. The deterioration of the ecological environment of fishery waters has not fundamentally changed, and is showing an aggravating trend.

8. Urban environmental pollution is aggravating.

9. Urban ground water pollution is generally serious and shows a deteriorating trend. The vast majority of rivers are polluted to varying degrees.

10. 2 3 rivers and more than 10 million hectares of farmland across the country are polluted.

3. The theme of the Environment Day over the years.

1974: There is only one Earth.

1975: Human habitation.

1976: Water, an essential resource for life.

1977: Concern about ozone layer depletion, soil erosion, soil degradation and deforestation.

1978: Development without destruction.

1979: For Children and the Future - Development Without Destruction.

1980: A new decade, a new challenge — development without destruction.

1981: Protection of groundwater and the human and human food chain; Prevent contamination by toxic chemicals.

1982: Commemoration of the 10th anniversary of the Stockholm Conference on the Human Environment and raising environmental awareness.

1983: Hazardous waste management and disposal to prevent acid rain.

1996: Our Earth, Our Home, Our Habitat.

1997: For life on Earth.

Maas Valley smog incident.

Los Angeles photochemical smog incident.

Donora smog incident.

London Smog Incident.

Minamata disease incident.

Bone pain events.

Rice bran oil incident in Japan.

Incident in Bhopal, India.

Chernobyl nuclear accident.

Toxic contamination of the Rhine incident.

Environmental protection information (more complete information in the link).

1. Top 10 global environmental issues.

1. Climate warming.

2. Ozone layer depletion.

3. Biodiversity is decreasing.

4. Acid rain spreads.

5. Forests are declining.

6. Land desertification.

7. Air pollution.

8. Water pollution.

9. Marine pollution.

10. Solid waste pollution.

There are more and more people smoking, throwing confetti, and driving gas cars, and the smell emitted by the big tobacco onions is too ......

The 1930 Maas Valley Smog Incident (2), the 1943 Los Angeles Photochemical Smog Incident, the 1948 Donora Smog Incident in the United States, the 1952 London Smog Incident, the 1961 Yokkaichi City Asthma Incident, the 1953-1956 Kumazumoto Prefecture Disease Incident in Japan, the 1955-1972 Toyama Pain Disease Incident in Japan, the 1968 Aichi Rice Bran Oil Incident in Japan, the 1984 Bhopal Incident, and the 1986 Chernobyl Nuclear Contamination Incident.

The environmental crisis that mankind is facing: First, global climate change. In recent years, countries around the world have seen the hottest weather in centuries in history, and El Niño events have occurred frequently.

Scientists** may experience hazards and impacts such as rising sea levels, impacts on agriculture and natural ecosystems, exacerbation of various meteorological disasters, and impacts on human health.

The second is ozone layer depletion and depletion. In 1985, British scientists shocked the world by observing an ozone hole over Antarctica. The extent of the destruction of the ozone layer on Earth is far more severe than most people think.

The consequences of ozone layer depletion are extremely serious, not only destroying the ecosystem and causing new environmental problems, but also increasing the number of human cancer and cataract patients, damaging human immunity, and increasing the incidence of infectious diseases.

Third, biodiversity is decreasing. Since the extinction of the dinosaurs, life on Earth has been decreasing faster than ever before.

Overall, 66% of continental vertebrates are endangered or endangered. Biodiversity is also being lost and degraded in marine and freshwater ecosystems, with freshwater ecosystems being hit hardest by their relatively closed environments.

Fourth, land desertification. Land degradation due to climate change and human activities. It reduces or even largely eliminates the biological and economic productive potential of the land.

Desertification is one of the most serious environmental and socio-economic problems in the world today. Desertification has suffered the most from Asia, followed by Africa, North America, Oceania, South America and Europe.

Fifth, the destruction of forest vegetation. Forests are the main body of terrestrial ecology. Deforestation has become a serious problem in developing countries.

Sixth, there is a water crisis and the destruction of marine resources. With the development of the economy, the demand for global freshwater resources is also growing.

Freshwater shortage, destruction of aquatic resources and pollution of terrestrial waters and seas have become major environmental issues of concern to the international community.

In the book "Human Destiny: Changes and Rules", anthropologist Dan Xicao believes that human beings are facing four common enemies: the crisis of poverty, the crisis of natural environment capacity, the crisis of self-destruction of human civilization and the crisis of comprehensive anxiety of human beings.

The analysis of these four major crises is quite profound. There is a sensation that rings on the ears.

The world's top 10 environmental pollutants are:

1. Climate warming.

2. Ozone layer depletion.

3. Biodiversity is decreasing.

4. Acid rain spreads.

5. Forests are declining.

6. Land desertification.

7. Air pollution.

8. Water pollution.

9. Marine pollution.

10. Solid waste pollution.

There are some environmental problems that are prevalent on the planet. Environmental problems in different countries and regions are universal and common in nature. Such as climate change, the destruction of the ozone layer, water shortage, and the sharp decline of biodiversity;

Some environmental problems are environmental problems in some countries and regions, but their impacts and harms have transnational and trans-regional consequences. Such as acid rain, marine pollution, transboundary movement of toxic chemicals and hazardous waste, etc.

Mercury pollutes the environment and accumulates in the human body to damage the nervous system.

Lead accumulation in the human body can damage brain function and lead to dementia.

Radiation Radioactive materials are the most dangerous contaminants and can cause severe damage to the human body and cause malignant swelling and pain.

Oil pollutes the oceans and destroys plankton, plants, and fish resources in the ocean.

Chlorine oxide Automobile exhaust contains a large amount of nitrogen oxide, which can cause cancerous changes in human lung organs and is also harmful to the circulatory and central nervous system.

Phosphate can cause pollution in lakes and rivers.

Carbon Monoxide When humans consume large quantities of petrochemical raw materials, they cause a large accumulation of carbon monoxide in the atmosphere, which disrupts the balance of the atmospheric atmosphere.

Sulfur dioxide At present, due to the annual emission of more than 200 million tons of sulfur dioxide by human beings, it causes serious pollution to the atmosphere and causes and aggravates the occurrence of respiratory diseases.

Carbon dioxide The global carbon dioxide is emitted into the atmosphere every year up to 5 billion tons, of which 1 billion tons are absorbed by forests, 1.5 billion tons are absorbed by the oceans, and the remaining 2.5 billion tons are left in the atmosphere to produce the greenhouse effect and seriously pollute the environment.

PTT pesticides can be used in excess, causing the death of birds and fish, and can also cause cancer in humans.

Polluting the oceans poses a great threat to marine life.