Why should preventive measures and biological control methods be preferred for protecting crops?

Crops : A cultivated plant that is grown on a large scale commercially, especially a cereal, fruit, or vegetable.

Biological control methods:

1. Preventive measures and biological control methods should be preferred for protecting crops because these methods are ecologically safe and these methods do not harm various life forms.
2. The high use of chemicals causes many environmental problems and leads to pollution.
3. They can also enter inside the food chain and cause serious health hazards to various life forms.
4. Biological control methods also involve the use of biological organisms which are safe for other life forms.