Final answer:
The purpose of biocontrol is to control non-native pests by using one biological species to reduce populations of a different species.
Step-by-step explanation:
The purpose of biocontrol is to control non-native pests by using one biological species to reduce populations of a different species. Biocontrol involves the use of beneficial insects, cultivated predators, and natural or non-toxic pest control products. It is used in agricultural commodities like cotton, corn, and vegetable crops, as well as in public health for vector control.