Many people pollute the environment: forests, air. They throw garbage on the ground, and do not remember that the forest is a house for animals. When we cut down the trees - we destroy the houses of our animals, their food. When we go by our cars or fly by airplanes, we work in factories, we pollute the environment, which means we poison our animals.Many animals are listed in the red book, because they die and they remain few. For such animals are watched and guarded more than others.