Question : How middle of 19^(th) century is an important reference to

1.	Question : How middle of 19^(th) century is an important reference to photosynthesis ?
Answer» Solution :By the middle of the nineteenth century the keys FEATURES of PLANT photosynthesis were known,that plants could use the light energy to make carbohydrates from `CO_(2)` and water. The empirical equation repsenting the total PROCESS of photosynthesis for oxygen evolving organisms was then understood as : `CO_(2)+H_(2)Ooverset("light")rarr[CH_(2)O]+O_(2)` Where `[CH_(2)O]` represented a carbohydrate (e.g., GLUCOSE, a six-carbon sugar). .

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