绿色在大自然中,是以植物的枝叶表现出来的。绿叶的功能,首先在于,它以自身的叶绿素通过光合作用,把空气中的二氧化碳和水化合成碳水化合物,最后成为粮食、棉花、油料等。据估计,全球的绿色植物,一年中能制造四千亿吨有机食物。植物的绿叶在进行光合作用时, 要吸收二氧化碳,吐出氧气。有人计算:一公顷地树林的绿叶总面积约为六万平方米,每天能吸 Green in nature, is the plant’s foliage. The function of greenery is firstly that it uses its own chlorophyll for photosynthesis to hydrate carbon dioxide in the air to synthesize carbohydrates and finally become food, cotton, oilseeds and the like. It is estimated that the world’s greenery produces 400 billion tons of organic food a year. Green leaves of plants in the photosynthesis, to absorb carbon dioxide, spit out oxygen. Someone calculates: One hectare of trees, the total area of ​​green leaves is about 60,000 square meters, can absorb every day