Q.What is the ecological process behind the biological control method of managing pest insects?

Step 1. Predators naturally keep the population densities of the species they feed on (their prey) in check, since predation increases prey mortality and limits how large a prey population can grow. Step 2. Biological pest control in agriculture applies exactly this natural process deliberately: a natural enemy (predator, parasite or pathogen) of the pest insect is introduced or encouraged in the field. Step 3. As that natural enemy preys upon the pest, the pest's population density is reduced, protecting the crop -- this mirrors how, in nature, the absence of frogs (predator …

Link the practical agricultural technique back to the underlying ecological interac …

• Describing biological control only as "using another organism" without naming predatio …