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The ocean is an intact body of water. The ocean itself has a huge capacity to carry, dilute, diffuse, oxidize, reduce and degrade pollutants. However, this ability is not unlimited, and when the local sea area receives toxic and harmful substances that exceed its own self-purification capacity, it will cause pollution of the sea area.
Marine pollution is an international problem. Protecting the marine environment and preventing marine pollution is a common requirement of all countries. Marine pollution is characterized by:
There are many types of toxic and harmful substances, large diffusion range, far-reaching harm, complex control, and difficult treatment. As a result, marine pollution is more severe and complex than other environmental pollution on land. In addition, marine pollution directly endangers the health of coastal people.
Sea ponds and other sea-reclamation projects have a long history in China, covering China's coastal provinces, and play an important role in preventing the flooding of sea tides, reclaiming tidal flats, and developing production. However, blind and unrealistic reclamation, arbitrary construction of marine projects, random sand and quarrying, and indiscriminate felling of shelter forests may damage the marine environment near the coast, cause coastal retreat, soil erosion, destroy fish and shrimp and other habitats and breeding sites, make coastal areas and transitional reclamation, change the original current route, and greatly reduce the self-purification capacity.
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As political leaders around the world head to Paris for COP21 to try to reach a new deal to control anthropogenic climate change, Chile, France and Monaco are calling for the protection of the ocean, the world's largest ecosystem that has been forgotten by global climate negotiations. The oceans cover 70% of the Earth's surface area and feed more than 1 billion people worldwide.
"The ocean is critical to global economic development and prosperity, and its contribution to the global economy is expected to be between $3 billion and $6 billion," the statement said. 90% of the world's goods** are transported by sea; Fisheries feed 4.3 billion people worldwide and account for 15% of animal protein consumption, while coastal areas play an important role in regional economic development. "Despite the importance of the ocean to humanity, the enormous pressure on the ocean is not currently on the agenda of the Paris climate summit.
For most people living on land, the impact of climate change on the ocean is nothing more than rising sea levels and its threat to people living inshore and to cities in ports and deltas. But climate change is affecting the ocean itself and could have an even greater impact on human society. The oceans absorb 90 per cent of the heat generated since industrialization and about 25 per cent of the world's carbon dioxide, playing a key role in mitigating the short-term effects of climate change.
The ocean provides us with these services at the cost of warming in the upper layers of the ocean at a rate of 10 degrees Celsius per decade, and signs of warming are now being detected in the deep layers of the ocean. As a result, ocean currents change, sea levels rise, salinity patterns change, and oxygen levels decrease in parts of the ocean.
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The ocean is the cradle and nurturer of life on Earth, and without the ocean there would be no you and me. The ocean is the main driving force of the Earth's water cycle, affecting most of the water in the global climate. Without moisture from the oceans, the Earth would become like a parched Mars; Or it can become a hot, carbon-dioxide-filled environment, like Venus.
The oceans are unevenly heated by the sun's rays, which causes changes in temperature and air pressure in the atmosphere, which in turn forms the wind, and creates the weather. The long-term distribution of energy from the oceans creates a regional climate that supports countless life forms on our planet. In addition, ocean currents transport heat, oxygen, nutrients, plants, and animals around the globe, and the ocean itself provides us with food and other necessities.
The ocean maintains a large and complex food chain, which is a major component of the Earth's overall food web.
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The ocean and humans are very closely connected. In addition to the abundant biological resources, energy, and water vapour that the ocean provides to humans, I would like to add an impact that I know of. The ocean has a big impact on the climate. seawater as a high specific heat capacity.
The fluid has a strong buffering effect on air temperature changes. The flow of the seawater itself transfers this energy, which in turn regulates the terrestrial climate. <>
Humans evolved from the Haikou fish, which is from the sea, and not only that, arthropods.
It also came from the sea, but before us. The ocean is the cradle of life, and the ocean is closely related to everyone and is of great significance to the survival and development of human society. Marine resources are an important part of natural resources.
Sewage from various countries is discharged into the sea from the sea, marine life.
will take direct damage. It is also not good for health for people to eat such fish. Oil extraction, land reclamation, over-intensive development, marine viruses, overfishing, etc., all have an impact on marine ecology. <>
Go to the supermarket to buy things and bring your own shopping bags, if you really don't have it, then reuse the same plastic bag, don't throw it away easily, try not to pack it when you can eat in the store, wash and wash the lunch box if you need to pack it and use it repeatedly, try not to use disposable chopsticks, in short, it's some small things within your ability, the ocean won't forgive us. <>
In fact, plastic pollution.
It has caused very serious damage to the oceans. So we should reduce the amount of plastic bags we throw away and don't throw garbage into the ocean. If someone sees trash in the ocean, they can help get rid of it, and they also need to reduce the use of plastic bags, especially single-use plastic bags.
At the same time, we should travel green, reduce carbon emissions, learn more about marine protection, and defend our oceans together. <>
Therefore, we should publicize more, let more people understand the marine environment, let more people protect the marine environment, and at the same time, we should also increase the intensity of implementation, so that we can protect the ocean more effectively.
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It is of great significance, the ocean is a resource, there are many organisms in the ocean, which can better maintain the ecological balance and better ensure the abundance of species, human beings should not discharge garbage in the sea, discharge some harmful items, pay attention to marine safety, and protect the marine environment.
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It is of great significance, it can ensure air quality, it can maintain temperature, and it also provides a very sufficient amount of carbon dioxide to sustain people's daily life; Be sure to protect the environment, save water, conserve resources, and don't litter.
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It's very important, and there are a lot of assets in the ocean that are very beneficial to people. Humans should not throw garbage into the sea, but clean up the garbage in the ocean, and put some nutritious things in the ocean.
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I hope you are satisfied
The oceans hollow out the weather and climate, keep the temperature stable, moisten the atmosphere and replenish the water of rivers and lakes. Humans breathe because of the ocean, which absorbs carbon dioxide and produces oxygen. Rainforests are just as important as other terrestrial ecosystems, but without the ocean, there would be no life on land.
About 97% of the Earth's space, known as the biosphere, is made up of oceans. It is no coincidence that 97% of the water, which is the source of life on Earth, is also contained in the blue sea. Nearly 3 percent of the remaining less than 2 3 percent of fresh water is frozen in the ice of Antarctica and Gully of the Valley.
80% of the planet's living organisms inhabit the oceans, and seafood currently provides 22% of the edible protein for humans.
So humanity can't do without the ocean.
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1. Modern scientific research shows that the earliest life originated from the ocean, and it can be said that the ocean is the cradle of human life.
2. The ocean is rich in water resources, which is responsible for the global water circulation system.
Operation, influence and even determine global climate change.
3. The ocean is rich in biological resources, which provides biological science in terms of the diversity of global biological resources.
Specimens studied.
4. There are abundant economic fish and algae in the ocean.
resources, which provide human beings with food, oils, chemical materials, medicines, etc.;
5. There are abundant mineral resources on the seabed.
The proportion of mineral deposits of manganese nodules in the deep sea is an almost endless treasure, and the seabed is also rich in oil, natural gas, and combustible ice.
Reserves. 6. The tidal changes of the ocean itself contain almost infinite energy for power generation.
7. Marine transportation is one of the most efficient modes of transportation at present, and port cities close to the ocean can generally develop rapidly.
8. The ocean is also the ultimate purification plant for pollutants around the world.
9. The ocean contains risks. Large tsunamis and typhoons often cause great disasters to mankind.
10. Expected sea level rise due to climate change.
Many low-lying coastal cities will be inundated with immeasurable potential human losses.
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