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| The importance of botany | |
| 作者姓名： | 张宁 |
| 摘 要： | The study of plants is important for a number of reasons．Plants ard a fundamental part of lire on earth．Thev generate the oxygen, food, fibres, fuel and medicine that allow higher life forms to exist．Plants also absorb carbon dioxide．a significant greenhouse gas,through photosynthesis(光合作用)．A good under- standing of plants is crucial to the future of human so- |
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