Nature is great, ecology is complicated, life is a mystery, but we know too little, less than "ephemera to heaven and earth, and are one of the sea corn." The earth is rich and colorful, the myriad of object. A blade of grass, a tree, an
Weoften say that the earth is our homeland and human society comes from nature. Therefore,I think our society is a part of nature. People should live harmoniously withnature. All the materials we need to live with come from nature, but we