New species appear in Antarctica?
Recently, according to foreign media reports, with the warming of the global climate, the glaciers in the Antarctic and Antarctic are melting rapidly, which has directly led to the very difficult survival situation of polar bears . In desperation, the polar bear changed its way of survival and chose to mate with the grizzly bear. After research, scientists found that the descendants of polar bears and grizzly bears are not only good at hunting, but also resistant to high temperatures. Because they look similar to polar bears, but have shorter fur, scientists also call them "short-haired bears." As soon as the news came out, it aroused heated discussions among netizens. Some netizens said: They look so cute, can I apply to keep one? Some netizens also said: With the emergence of new species, old species are destined to disappear, and they don’t know whether they can survive in the Arctic at the same time. So, will polar bears really be replaced by new species? And what does the emergence of new species mean?
Before talking about short-haired bears, let’s first talk about why polar bears choose to mate with grizzly bears. As we all know, after global warming , Arctic ice is melting much faster than before, which directly leads to a survival crisis for polar bears. In order to survive, polar bears can only find new habitats all the way south. On the other hand, grizzly bears are unable to survive in their original habitat due to rising temperatures, so grizzly bears have begun their journey north. In this way, polar bears and grizzly bears meet while searching for habitat and later naturally mate.
Polar bears may be replaced?
Let’s talk about the short-haired bear again. The short-haired bear is also called “ gray polar bear ”. In 2006, the gray polar bear came into people’s sight for the first time. At that time, an American hunter shot and killed a bear. He originally thought it was a polar bear, but the strange thing was that the bear's back and limbs were brown, and it also had the characteristics of a grizzly bear's long claws and arched back. Found out it wasn't a polar bear. In addition, the offspring of polar bears and grizzly bears of different genders also have different names. For example, the offspring of a male polar bear and a female grizzly bear is called Pizzly, and the offspring of a female polar bear and a male grizzly bear is called Glolar. Regarding the emergence of new species, some scholars believe that in the near future, or before polar bears become extinct, gray polar bears will directly replace polar bears. This also means that humans will witness the death and rebirth of a species. But will polar bears really be replaced by new species?
At present, it seems that polar bears will indeed be replaced by new species. According to researchers at the University of Toronto : As the Arctic sea ice decreases, the hunting period of polar bears becomes shorter and shorter. In addition, after the Arctic ice melts, the collapse of icebergs will also kill many polar bear cubs. In addition, food shortage is also a big problem for polar bears. With no food source, polar bears are so hungry that they even dig through trash cans in search of food. It can be said that the current polar bears are no longer adapted to the current living environment. Researchers predict that polar bears will disappear from the earth in at most 80 years.
Why do species in nature evolve?
It is worth noting that in addition to polar bears, there are many creatures that have begun a new round of evolution in order to avoid being eliminated by nature. For example, the owls in northern Europe have changed color. Generally speaking, the fur colors of owls are only gray and brown, and they do not change throughout their lives. Also, in the past, gray owls would have made up a bit more of the population because it was easier to survive during the cold winter months. But in recent years, the proportion of brown owls has gradually increased. The fundamental reason is climate change. As global warming makes winters less cold than before, brown owls are finally surviving. So, what should we do in the face of these new species? And what does their appearance mean?
In fact, we know that everything in the world is changing and evolving. When facing new species, we must first judge whether they are good or bad for humans. If they are good, then we will happily accept them. But if it is a disadvantage, then we must find a way to fundamentally solve this problem. Ultimately, humans still need to protect the earth.The emergence of new species also shows that the earth is changing, but what we need to understand is that the time of change of all things is slow, and it will take at least tens or hundreds of thousands of years to see changes. But now, the global environment is worsening, with air pollution, seawater pollution, land desertification... and it is humans themselves who are causing these problems. If the ecological balance on the earth is once broken, human beings will face a devastating blow.
However, for now, mankind has not reached the worst point. If we start to reflect on our mistakes and correct them from now on, I believe the earth can still return to normal. Only in this way can human beings survive on the earth for a long time. What do you think about this? Welcome to leave a message in the comment area for discussion.
