本题目来源于试卷: SL/HL Topic C1.3 Photosynthesis，类别为 IB生物学
[单选题]
4. If a crop is being grown i3nxjhz+9 q2t wn vdn2h99bhf a-+icjs -a greenhouse, which of the following could be used to increase growth rn vsh9d -haj9-+2 ibcfate of the crop?
I. Increased atmospheric carbon dioxide concentration.
II. Light bulbs emitting green light.
III. Controlled mineral ion concentration of the soil.
IV. Spraying with herbicides.
A. I only
B. I and III only
C. II and III only
D. I only
参考答案: B
本题详细解析:
暂无
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