光合作用是绿色植物所特有的生命现象。它将太阳的光能转化成化学能,贮藏在植物体内,将无机物(水与二氧化碳)化合成有机物(碳水化合物),这是使自然界生意盎然,人类社会繁荣昌盛所需要的物质和能量的主要来源。光合作用还放出氧气,是地球上氧气的唯一来源,它在生物演化的进程中也起了重要的作用。 Photosynthesis is a unique phenomenon of life of green plants. It converts the sun’s light energy into chemical energy, stores it in plants, and synthesizes inorganic substances (water and carbon dioxide) into organic matter (carbohydrates), the substances and energies needed to make nature a viable business and humanity thrive The main source. Photosynthesis also releases oxygen, the only source of oxygen on earth, and it plays an important role in the process of biological evolution.