English composition "Endangered animal polar bear"

Polar bear is the largest land carnivore in the world, also known as polar bear, naive. The skin is black, because the hair is usually transparent, so the appearance is white, yellow and other colors, huge and fierce.

Polar bears are equivalent to human vision and hearing, but their sense of smell is very sensitive, seven times that of dogs; The fastest running speed can reach 60 km/h, which is 0.5 times of the world 100 meter champion 65438+. As the global temperature rises, the Arctic ice floes gradually begin to melt, and the polar bear's former home has been damaged to some extent, and it is likely to become extinct in the near future, so human beings need to be protected.