What does it mean that the Arctic melts 2 billion tons of water a day?

This means global warming and polar bears will lose their habitat. During the Copenhagen conference, many environmentalists pretended to be polar bears, hoping to attract the attention of delegates or politicians with sad tears, and hoped that the conference would save the fragile planet through strict carbon dioxide emission reduction targets. During this period, a photo of a polar bear eating its cubs has attracted the attention of the whole world, which has become the most direct evidence that the living environment of polar bears has been reduced due to human activities. In 2004, American scientists found four drowned polar bears in Beaufort Bay. This sounds incredible because polar bears are natural swimmers. Its body is streamlined, its claws are as wide as paddles, and it can swim 40 to 50 kilometers in one breath in the icy waters of the Arctic Ocean. But scientists who support the theory of climate warming soon found the answer, that is, the Arctic ice sheet is shrinking due to climate warming. It is reported that the sea ice on the coast of Alaska has retreated 260 kilometers to the north, and polar bears here have to swim a long distance to find solid ice. Looking for food at sea for a long time makes polar bears exhausted. If they encounter big waves in the sea, they will easily drown in the sea. After constant publicity, the number of polar bears has become an important symbol to measure climate change. This large mammal living in the Arctic ice sheet is the most symbolic symbol among many animals and plants affected by climate change. Like polar bears, migratory birds, spotted ducks, singing insects, Chinese alligators and other animals and plants are considered to be the most direct victims of climate warming. In fact, after tens of thousands of years of evolution, polar bears are veritable Arctic overlords, and the strength of their hands can break through the thick ice. When hunting beluga whales, jumping into the water from the ice will be badly hurt. They have super adaptability to the environment and survived several small ice ages. It is far-fetched to conclude that polar bears are drowned just because of a few bodies. Toxic chemicals, the development of oil exploitation and overfishing are the main threats faced by polar bears at present. Frequent human activities have reduced their habitats, which is the reason for the decline of polar bears. From the food chain, it will be difficult for polar bears to survive if their food is greatly reduced. Overfishing, marine pollution and frequent human activities reduce their living space, which will affect the number of polar bears. After all, it's really wrong to blame carbon dioxide. Because polar bears have a wide range of activities, it is generally difficult to count their numbers. Under modern high-tech conditions, helicopters, satellite remote sensing and other means have been used, but I am afraid it is still impossible. Polar bears in different regions have different "living conditions" (that is, sea ice conditions) and "social scope": some are only active in the local area, and some footprints can extend to far places. The number of polar bears monitored now is only visible, and some earlier figures are mostly "predictions". In August 2009, American wildlife photographers took a lot of photos of polar bears while exploring the remote Svalbard Islands in Norway. A spokesman for WWF and a marine mammal expert believe that there are more polar bears in Svalbard than we have seen in the past few years. Since the 1970s, the Norwegian government has implemented laws and regulations prohibiting the killing of polar bears and some prey. Since 1952 banned the hunting of walruses, the number of walruses has increased, which may be the reason for the increase in the number of polar bears. Because the prey of polar bears has increased. Climate warming will increase the food in the Arctic Ocean, which in turn will increase the number of polar bears. There are 19 polar bear populations on the earth. Eight populations are known to be decreasing, three populations are stable, and the polar bear in Canada is the only known population to be increasing. The impact of climate warming on all polar bears should be the same, but the fact is just the opposite. Environmentalists just put pressure on delegates from all over the world with polar bear tears and emotional words. In the hands of environmentalists, as important as polar bears, there are declining glaciers. We often see large glaciers falling off the ice shelf from TV pictures, and huge glaciers floating on the sea. It seems that all glaciers will melt completely. Photos and repeated pictures seem to remind people how much the sea level will rise and how many coastal cities will disappear if greenhouse gases are not controlled. First of all, the Arctic Ocean is an ocean, not a continent. Because it is located in the North Pole, the weather is extremely cold and it freezes all year round. The ice area of the Arctic Ocean is 654.38+million ~ 654.38+065.438+million square kilometers, accounting for 68%~74% of the total area of the Arctic Ocean. In summer, it is reduced to 7.5 million to 8 million square kilometers, accounting for 50% to 54% of the total area of the Arctic Ocean. But in winter, it is quickly covered with ice as thick as 3 meters. Source: Literature and History Monthly