Answers

2015-11-16T18:34:40+05:30
ADVANTAGES :
1)chemicals are used in preservation of different food items, so that they remain fresh for long period of time 
2)chemicals are used in medicines which we use whenever we are ill to get well.
DISADVANTAGES :
 1)Use of DDT, CFCs can lead to hormone replacement therapy.
2) Moreover, use of chemical fertilizers can contaminate water bodies which cause severe health issues.
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