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A study conducted by Deakin University in Australia found that as the earth gets hotter, many warm blooded animals are "deforming", such as evolving larger beaks, ears and legs, so that they can better regulate their body temperature < p > previous studies have shown that the beak of birds and the ears of mammals can help dissipate excess heat. And in warmer climates, these appendages tend to be larger. Scientists at Deakin University reviewed past research on various species that are changing their body shape and found that climate change may be the culprit < p > they found that the size of appendages of some species changed by as much as 10%, and this change is expected to become more and more obvious as the earth warms further < p > Figure 1: thermal imaging of two Galapagos finches shows that the two birds are dissipating heat through their beaks and legs < / P > < p > researchers found that mammalian species are also experiencing significant body shape changes. Although most studies on the impact of climate change on mammals focus on overall size, some researchers have observed changes in specific appendages. For example, wood mice have longer tails, while shrews have larger tails and legs. It has also been found that with the climate warming, bats' ears, tails, legs and wings have become larger < p > Sara Ryding, an ecologist at Deakin University and the author of the paper, said: "Many times, when the mainstream media discuss climate change, people will ask 'can humans overcome this problem?' or 'what technology can solve this problem?' but now we find that animals are also adapting to these changes, but the time of this change is much shorter than most evolutionary times. The climate change caused by humans has brought great pressure to them , although some species can adapt, others will die out. "< / P > < p > although evolution has occurred since the birth of life on earth, laiding is worried that evolution is happening too fast. She said: "I don't want people to say, 'animals are evolving to cope with climate change, which means they can survive through evolution.' but in fact, this is not true at all." < / P > < p > in the study, laiding and colleagues reviewed the research on shape change of various species, from Australian parrots and Asian bats to ordinary pigs and rabbits, in order to find evidence that climate change may contribute to these changes. The researchers pointed out that these changes occur in a wide range of species from different geographical regions, which makes it difficult to determine any change except climate change His common potential reasons. < / P > < p > Figure 2: the beak of Australian parrots has increased by about 4% to 10% on average Since 1871, which is related to the rise of average temperature in summer < / P > < p > however, at the same time, the multifaceted and progressive nature of the impact of climate change makes it difficult to accurately point out the specific triggers of these changes. The researchers point out that they have been noted in birds For example, the beak of Australian parrots has increased by about 4% to 10% on average Since 1871, which is closely related to the change of average temperature every summer. At the same time, dark eyed sparrows found in North America have a large beak size, which is related to the short-term extreme temperature of their cold habitat. < / P > < p > laiding explained: "So far, the increase of appendages we have seen is quite small (less than 10%), so these changes are unlikely to be noticed immediately. However, prominent organs such as ears are expected to become larger, so we may see a real version of Dumbo in the near future." < / P > < p > Figure 3: the dark eyed sparrows found in North America have a large beak, which is related to the short-term extreme temperature of their cold habitat < / P > < p > laiding reminded: "We saw these reactions early in the climate crisis, which is worrying. Deformation does not mean that animals are adapting to climate change, it can only indicate that they are evolving for survival, but we are not sure about the other ecological effects of these changes, nor whether all species have the ability to survive by changing their body shape." < / P > < p > with the completion of the preliminary study, researchers are now seeking to directly investigate the body shape changes of Australian birds through 3D scanning of museum specimens collected in the past 100 years. They explained that this will enable them to distinguish which birds have changed the size of their appendages due to climate change and find out the reasons. < / P > < p > reading said: "I hope these findings can really highlight the impact of climate change on animals. We should strive to reduce emissions and avoid the deterioration of the climate crisis as much as possible." (small) < / P > < p >

2023-03-22 10:04:43