Explanation it can also slow down photosynthesis. ... These mechanisms can shut photosynthesis down if sugaraccumulation is too high.
 
        
             
        
        
        
Answer:
are you asking which of the quotation is a physical charactistics? both are
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Answer:it is 
“'If you would grant me three wishes, let them, I pray you, be these. Allow me to forget all that I have learned through the agency of these terrible pennies; give me a contented mind; and lastly, allow me to return to my studies with a new zest and the determination to rise by my own honest effort above all obstacles. It is all that I would ask!'
Explanation:
hope it helped man this is my first anwser