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Strictly speaking, it is because of environmental changes that wild polar bears may become extinct, the important thing is the word wild, human beings now have zoo captive polar bears for people to visit, polar bears will not be extinct, but wild will, after all, global warming has led to the melting of large areas of ice floe is fatal to polar bears, although polar bears are very good in water, but after all, they are still terrestrial creatures, and they are only in the water for predation, and their physical strength is exhausted, and they will drown if they can't go ashore to rest. This requires people around the world to pay attention to the issue of global warming, and to improve this before the living conditions of wild polar bears become worse, and this creature may be saved. An animal does not exist in the wild, in fact, it has nothing to do with extinction, it is captive by humans, it has lost its wildness, humans can only see its appearance, about any other polar bear habits will be extinct, what is the difference between it and other animals in the zoo, except for appearance, it exists in name only.
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At present, polar bears are not in danger of extinction, and the number of individuals in the polar bear population is very stable. Recently, the Nordic high temperature broke out, which is actually the Nordic high temperature. In the Arctic Circle, the temperature is even lower than usual.
In addition, there is a consensus on global warming, and the earth is indeed warming now. However, the point is that whether it is caused by human activities is inconclusive, and there is no conclusive conclusion. At best, humans have played an aggravating role.
Because interglacial warming will lead to the precipitation of carbon dioxide and methane dissolved in oceans and lakes into the atmosphere, which will exacerbate the warming and then vicious circle.
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If one day the polar bear goes extinct and is replaced by a brown bear, this is the law of natural evolution. And it's humans who make it happen ahead of schedule. In recent decades, human exploitation and exploitation of nature have reached the extreme, and will continue to do so.
The gradual disappearance of species that were supposed to live with humans will continue. Half a century later, all the animals we see are living in zoos. We live in a civilized society, and we are all civilized people.
Usually everyone talks about protecting the environment, protecting the earth, and so on, it seems that they are so far away from us, but I don't think it has anything to do with me. Not really. Some time ago, I watched a few documentaries, including "Dolphin Bay", "Return to the Wolves" and ** about Antarctica, and I felt a lot.
In the story, the dolphins are sold to the aquarium, which is the dolphin show we often see. And the wolves are hunted for a wolf skin. So don't say that protecting the environment and animals has nothing to do with us, what we eat and even watch every day may be a catastrophe for them, but we can't see it.
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Due to the increase in global temperatures, the Arctic ice floes are gradually beginning to melt, and the former home of polar bears has been destroyed to a certain extent, and it is likely to become extinct in the near future, requiring human protection. If the habitat on which polar bears live is destroyed, or if the habitat of prey is changed, resulting in the reduction or disappearance of prey, it will bring great threats to the survival of polar bears.
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I think in the next 40 years, it's very likely that you'll only be able to see polar bears in zoos, and it's a very big tragedy because the Arctic glaciers are probably completely melting.
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Recently, the temperature in the Arctic Circle in northern Sweden reached 30 at one point. In northern Siberia, the temperature also reached 32 at the beginning of this month. According to foreign media reports, polar bears may become extinct within 40 years.
The abnormally high temperatures have further exacerbated the melting of the Arctic Circle sea ice, which is already showing an abnormally low trend. Declining sea ice would not only threaten the survival of creatures such as polar bears, but could also further exacerbate the abnormal weather in the Northern Hemisphere. It is everyone's responsibility to maintain the balanced development of the earth's ecological environment.
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I think so, there are a lot of people who want to get their hands on polar bear fur, and poachers are risking their lives to hunt them, so their numbers are decreasing. If the Earth's temperature continues to rise like this in 40 years' time, our planet may become an ocean, and not only polar bears but also humans will face a huge threat to life.
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Because with the progress of our human science and technology, but the damage to nature is also very large, for example, there are too many cars in the world now, and the emission of carbon dioxide affects the protective layer of the earth, causing the global temperature to rise. Let the glaciers in our north and south poles melt, leaving the Arctic with less land than it may have. In addition, when the temperature rises and the ice at sea begins to melt, it will cause great damage to the ecosystem there, and many animals and plants will die as a result, and it will also have a great impact on the hunting of polar bears, so these are all affecting the survival of polar bears.
Polar bears have a low birth rate of only two to three cubs each year, but the survival rate of cubs is only one-third.
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Jennifer**, a scholar of Arctic meteorology, said that one summer before 2040, the ice in the Arctic Ocean could disappear completely, 60 years earlier than the countdown more than 10 years ago**! Without enough foothold and food, many polar bears starved to death, and even drowned in search of land for long swimming.
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I really don't want the polar bear to go extinct, after all, it's the largest living predator on land.
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While you're still worried about whether polar bears will go extinct, polar bears are eating all over the garbage heap, and more and more polar bears are heading south, and the number is increasing.
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It's too much to look down on nature.
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After 80 years, the polar bear may never be seen again, and if it does happen, it will undoubtedly be a heart-wrenching event. So, what are the causes of polar bears' extinction? First, global warming; second, there are people who engage in illegal hunting; Thirdly, there is a problematic obstacle to their reproduction.
1. Global warming and rising temperatures
According to the relevant data report, as the global temperature is getting higher and higher, even exceeding people's expectations, the ice and snow in the Arctic are melting faster and faster, and the polar bears have suffered damage to their former homes. At the same time, the variety of foods that they usually eat is becoming less and less, and even worse, there have been news that polar bears have no way to eat and have to go into villages to forage for food. Therefore, as this series of circumstances changes, the survival of polar bears is under major threat, and it is possible that they will become extinct in the next few decades.
2. Illegal hunting, polar bears are becoming less and less
Although China has introduced a series of relevant policies for the protection of animals, and even severely punished those who break the law, there are still illegal elements behind it, in order to obtain some benefits from it, secretly hunting polar bears, using them for illegal trading, and even selling them to people in other countries. As a result, polar bears have also begun to gradually decrease because of their greed.
Third, there is a problem with reproduction
As the global temperature begins to rise, the Arctic ice floes will begin to melt, and polar bears used to rely on ice floes to freeze their food, so that they can get less food, their bodies will begin to change, and many will become malnourished, resulting in a decline in reproductive ability, and the number of polar bears will become smaller and smaller.
At present, the normal survival of polar bears is in a relatively critical state, since the past cannot be reversed, but I hope that everyone from now on, can use their own actions to reduce some of the damage to their homes: do not litter, implement garbage classification, love the environment, low-carbon travel.
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1 They spend most of their time in a "stationary" state, sleeping and resting can better save physical energy, and a small part of the time is spent walking on land to find food, but polar bears often snatch food among themselves.
2 Polar bears rely on glaciers for predation, and in recent years, the global temperature has risen, resulting in the continuous dissolution of glaciers in the Arctic, making their living space smaller and smaller, and the difficulty of predation has increased, and many polar bears have starved to death because they could not catch prey.
3 Although the influence of climate is the main reason for the decline of their numbers, human environmental pollution, poaching also accounts for a large part, although the impact of one or two degrees of temperature reduction is not very great for humans, but for other animals it is indeed fatal, and the maintenance of the food chain requires many influences.
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Because of the temperature, lack of water, lack of food, the environment has been damaged, and polar bears are not suitable for the season.
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Global temperature warming, polar bears living in a gradually harsh environment, ice and snow melting, the temperature is gradually rising, by the serious hunting by humans, affected by these comprehensive factors, polar bears may become extinct in 80 years, so in this case, we must protect accordingly.
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Wild polar bears may become extinct due to climate change.
As the global average temperature rises, the ice around the Arctic is melting faster, and polar bears are constantly being "encroached" on their territory, making it increasingly difficult to find food.
Many times, in order to forage for food, they have to swim up to about 100 kilometers in the sea. Scientists such as Monette believe that drowning of polar bears like this is common in the Arctic, as the number of polar bears forced to travel long distances in search of food has increased significantly over the past 20 years as the Arctic ice continues to melt.
Deaths from long journeys to forage for food could be a significant cause of polar bear deaths, and such deaths could increase in the future if the Arctic ice melts further, Monette said. Some previous studies have also suggested that polar bears are the biggest victims of climate warming.
Take Hudson Bay in Canada, for example, where polar bears live on shore in the summer, and they have to trek nearly 100 kilometers to hunt seals. Over the past 15 years, female polar bears have become less and less weighted due to delayed ice formation, and with it, fertility and cub survival rates have declined.
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If, as the German scientists say, the Arctic will be ice-free in summer, then the polar bears will face extinction, and we can only save the species, not the population.
1. It is not difficult to save a small number of polar bears, and they can be raised indoors. In some zoos, there are already examples of raising polar bears, so if you only want to save a small part, lead them to the zoo to raise, implement artificial conservation, artificially simulate their living environment, keep them in captivity, protect their genetic populations, and release them when the environment allows, it is okay, and China's giant pandas are this model.
Second, we can't do large-scale rescue, because we can't change the climate. However, we can't do it on a large scale, because the power of nature is too great, and it is impossible to protect all the animal breeds of polar bears and even the Arctic Circle. Because extreme changes in the climate of a place will always cause most of the animals in that place to die because they are not adapting, and the walrus before the Arctic Circle is an example.
Third, we can only hope that climate change will make the Arctic a polar environment again. If you just keep the polar bear species, then you can pair them and raise them in captivity, although it is possible that after a few generations, they will lose their hunting instinct, but at least it is better than the extinction of the whole species; However, if you want them to live well in their natural state, then we can only hope that the sky will be beautiful, so that global warming will not come, so that the summer in the Arctic will not be ice-free, so that the polar environment of the Arctic Circle can be preserved, and then the ecology of the Arctic Circle can be protected, and the ecology will not be extinct.
In general, the Arctic is ice-free in summer, and we can't do it artificially, because we can't make an artificial freezer as big as the Arctic Circle; Polar bears are facing extinction, and we can only promise not to poach them, and keep them artificially when they are dying of extinction in order to preserve the species.
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Polar bears don't have to go extinct. Polar bears are so good swimmers that they were once considered marine animals. Polar bears spend most of their lives in a state of "rest", such as sleeping, lying down, or waiting for their prey, and spend the rest of their time walking or swimming on land or ice, attacking their prey, and spending the rest of their time enjoying food.
Predation. Polar bears generally hunt in two ways, the most commonly used is the "wait and see" method. They find the seal's breathing holes on the ice beforehand and wait for hours with great endurance.
As soon as the seals emerge, they launch a surprise attack and use their sharp claw hooks to drag the seals up through their breathing holes.
If seals are on shore, they will also hide out of sight of the seals and then creep over to launch an onslaught. Another mode is to dive directly under the ice and do not attack until the seal is close to the shore, which has the advantage of cutting off the seal's retreat. After eating and drinking, the polar bear will carefully clean up the hair and remove all the blood stains from the food.
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