1.

Write the examples of pesticides. What are their effects on soil and human beings?

Answer»
  • Besides DDT the most important pesticides are Benzene hexachloride (BHC), chlorinate dihydro carbons, organophosphates, aldrin, malathion, dieldrin, furodan etc., are the examples.
  • The remnants of such pesticides used on pests may get absorbed by the soil particles, which then contaminate root crops grown in that soil. 
  • The consumption of such crops causes the pesticides remnants to enter human biological systems, affecting them adversely. 
  • Pesticides not only have toxic effect on human and animals but also decrease the fertility of the soil. 
  • Some of the pesticides are quite stable and their biodegradation may take weeks and even months.


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