Know whether sucking juice is parasitic or predatory.

Predation and parasitism are two different concepts, although they both seem to be ways of life. Predation means that one organism feeds on another. For example, tigers feed on antelopes and zebras, while giant pandas feed on bamboo. Parasitism refers to the fact that one organism's survival is based on another organism, and it does not have the ability to survive independently, such as parasites in human or animals. (It is known that sap absorption is parasitic) But it should be noted that parasitism and * * * are two different concepts, although there are similarities. Parasites are generally harmful to the host, they use the nutrients of the host to maintain their own survival, while * * * health generally means that both sides can use each other's nutrients, and the most representative is the relationship between rhizobia and leguminous plants.