Have you seen pollution in your life? I often see people pollute the environment, they pour waste water into rivers, throw rubbish, and some people cut down a lot of trees, they have no awareness of protecting the environment. When environmental pollution is serious, human beings also face great danger. I suggest you do more things you can to protect our homes, such as planting trees, picking up litter, and going out for bicycles. Protecting the environment is everyones responsibility!