Answers

2016-02-14T07:09:34+05:30
When pesticides r used in crops they mix with the water and enter the food chain.
when the stored water is used by humans pesticides enter the in the body of food chain.
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2016-02-14T08:16:54+05:30
Well , When pesticides are used to protect crops from insects or for a good yield of crops . Then this harmful chemicals remains on the crops.

And we human beings are a part of this food chain . We depend on producers and we're the consumer who consume this plants which is harmful to us , When we intake this as a food . Therefore ; through this way pesticides enter the food chain and subsequently it affects the human body .
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