有许多动物在春夏季的时候,是稀疏的棕黄色或灰褐色的毛,但一到冬天,大地覆盖白皑皑的冰雪时,它们就换上浓密的冬毛,浑身雪白。雪鼬、雪兔、银鼠等动物就是这样。这些动物的毛色为什么会发生变化呢?这是由于动物的皮毛中含有各种色素的缘故。冬天来到了,气温很 There are many animals that are sparsely tan or tawny hairs in spring and summer, but as soon as the earth is covered with white snow and ice in winter, they are replaced with thick winter hairs and white snow. This is the case with animals such as snow meerkats, snow rabbits and silver rats. Why do these animals' coat color change? This is because the animal's fur contains a variety of pigments. Winter is coming, the temperature is very high