各种燃料燃烧的废气大部分是二氧化碳,用二氧化碳不仅可以提炼金刚石,而且可以作为生产石油的原料之一。科学家认为,世界上几乎没有无用的东西,二氧化碳虽然可以产生温室效应等公害,但也一定能把它变成有用的宝贝。因为,植物生长就是利用水和二氧化碳在阳光照射下制造有机物的结果。那么,为何不可以用它来促进植物生长呢? Most of the fuel combustion of exhaust gas is carbon dioxide, with carbon dioxide can not only refine the diamond, but also as one of the raw materials for the production of petroleum. Scientists believe that there is almost no useless stuff in the world. Although carbon dioxide can cause public nuisance such as the greenhouse effect, it can certainly turn it into a useful baby. Because plant growth is the result of making organic matter using sunlight and water and carbon dioxide. So why not use it to promote plant growth?