Through the comparison between different leaves, we also discovered that the yellow stripe on leaves won't weaken photosyntheticactivity;
通过不同叶片的比较还发现：锦竹叶片上不过量的黄色条纹并不会使其光合生理活动减弱；
2
The answer to this riddle lies in the metabolic activity of early photosynthetic life-forms that slowly but surely transformed the chemical composition of Earth's atmosphere.
这个谜题的答案在于早期光合生命形式的新陈代谢活动，这种活动缓慢但一定改变了地球大气的化学成分。
3
Photosynthetic bacteria have the activity of hydrogen photoproduction and can convert solar energy into hydrogen energy utilizing organics.