When I was very small, I could see many birds flying in the sky when I looked at the sky,and I could hear birds singing every morning, but now, I can find hardly a bird in the sky,even in the park,there is seldom a birdcall. It is because the environment has been polluted and many birds are dying. We can do small things to protect the environment, so that the animals can live with us.

When I was very small, I could see many birds flying in the sky when I looked at the sky,and I could hear birds singing every morning, but now, I can find hardly a bird in the sky,even in the park,there is seldom a birdcall. It is because the environment has been polluted and many birds are dying. We can do small things to protect the environment, so that the animals can live with us.