What do you mean by green chemistry? How will it help decrease environmental pollution?
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Comment: 'Green chemistry is an alternative tool for reducing pollution'

By green chemistry, we mean producing the chemicals of our daily needs using such reactions and chemicals processes which neither use toxic chemicals nor emit such chemicals into the atmosphere. 
Green chemistry uses mild and environmental friendly reagents such as sunlight, microwaves, sound waves and enzymes. These are not toxic reagents. Recently many photochemical reactions are carried out using sunlight and ultraviolet light. Many known reactions have also been carried out by using microwave arrangement. Instead of microwaves, sound waves have also been used to carry out certain known chemical reactions. It is evident that if continuous efforts are made to develop green chemistry, it will certainly help us to keep our environment pollution free.