The phrase pest is subjective as one male's pest may very well be Yet another guy's

helper. For example, pest A could be a risk to crop A, and pest B a danger to

crop B. Nevertheless, if pest B is really a all-natural predator to pest A, then the farmer who

wishes to guard crop A may cultivate and launch pest B among his crops.

You will find there's idea that without the need of guy's intervention during the food stuff chain…