Question
Why should preventive measures and biological control methods be preferred for protecting crops?
Solution
Preventive measures and biological control methods should be preferred for protecting crops because excessive use of chemicals leads to environmental problems like pollution. Chemicals are also poisonous for many plant and animal species. The biological method does not cause pollution and are not toxic to the other organisms. Preventive measures minimizes the chances of pests or diseases to infect the plants and thus protects the crops.
