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 animal, a group, a person, a family, a nation, a society. Is the result of a natural progress. Natural animal, natural plant, all the plants in the natural, natural all life is useful. Their existence is useful. To think of the mother at the sight of the forest, wood; At the sight of the rivers of power; At the sight of the grassland, to think of red meat and cashmere sweater; To think of at the sight of the animal, can eat, can use, can be used as a medicine.

　　Cherish the animal is the wealth of society, we must protect. Although some are common, but beneficial to human animals, we should also take care of. Plants but also the friend of human. Plants can help people purify air, reduce noise, keep the soil and water conservation, windbreak and sand-fixation, regulating climate. Really done a lot of contribution for the human.

　　大自然是偉大的，生態(tài)是復雜的，生命是奧妙的，而我們了解得太少了，尚不及“寄蜉蝣于天地，渺滄海之一粟。”地球是豐富多彩，物象萬千的。一根草，一棵樹，一個動物，一個群體，一個人，一個家庭，一個民族，一個社會。都是自然不斷進步的結果。天生的動物，天生的植物，天生所有的植物，天生所有的生命都是有用的。它們的存在就說明有用。一看到森林，就向想到母木材;一看到河流就想到發(fā)電;一看到草原，就向想到牛羊肉和羊絨衫;一看到動物，就向想到能不能吃，能不能用，能不能入藥。

　　珍惜動物是社會的財富，我們必須保護。一些雖很常見，但對人類有益的動物，我們同樣應該愛護。植物也是人類的朋友。植物能夠幫助人們凈化空氣，減少噪音，保持水土，防風固沙，調節(jié)氣候。真是為人類做了不少貢獻。

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