Question
What is NOT a disadvantage of chemical control of pests and weeds?
Answer: Option D
:
D
Chemicals used to control pests and weeds cause pollution of soil and water. They also result is biomagnification, which means accumulation of the chemicals in the higher trophic levels of food chains. They are often indiscriminate, so they kill both useful and harmful organisms. However, it is biocontrol agents and not chemical control agents that rely on natural predator-prey relationships.
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:
D
Chemicals used to control pests and weeds cause pollution of soil and water. They also result is biomagnification, which means accumulation of the chemicals in the higher trophic levels of food chains. They are often indiscriminate, so they kill both useful and harmful organisms. However, it is biocontrol agents and not chemical control agents that rely on natural predator-prey relationships.
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