which chemical effect on retards plant growth and cause leaves to turn yellow.?
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abcissic acid retards growth
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hello!! Acid rain is a rain that is unusually acidic and possesses elevated levels of hydrogen.....ion low( PH).Acud rain is caused is caused by emissions of sulphur dioxide and nitrogen oxide, which reacts with atmospheric water and water vapour to produce acids....
vegetation and soil are the prime receptors of acid deposition and function as sink..
Acid rain generally retards the growth of plants by stimulating abnormalities in metabolism of the plants,like photosynthesis, and there are exceptional cases of promoting growth also....
....hope it will help you..thanku:-)
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