十万个为什么·科学阅读30篇(6)
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How Do Plants Make Their Own Food?
植物怎样自己制造食物?
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Plants use sunlight, water and carbon dioxide.植物利用阳光、水和二氧化碳。
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This process is called photosynthesis.这一过程称为光合作用。
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Green leaves contain a pigment named chlorophyll.绿色叶片中含有叶绿素这种色素。
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Chlorophyll captures light energy from the sun.叶绿素捕获太阳的光能。
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Water travels up from roots through stems.水分通过茎从根部向上输送。
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Carbon dioxide enters through tiny holes in leaves.二氧化碳通过叶片上的微小气孔进入。
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Together, they make sugar and oxygen.它们共同生成糖和氧气。
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Oxygen floats out for us to breathe.氧气释放出来供我们呼吸。