Page 9 - 2. Lesson notes-Food chain and Food web
P. 9

Several pesticides and other chemicals enter the food chain to protect our crops from
           diseases and pests. These chemicals are either washed down into the soil or into the water
           bodies. From the soil, these are absorbed by the plants along with water and minerals, and
           from the water bodies these are taken up by aquatic plants and animals. This is one of the
           ways in which they enter the food chain.
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