Confrontation, in ecology, refers to the relationship between two or more different kinds of organisms living together, one or both of whom suffered damage. Confrontation is usually the result of different organisms occupying the same niche. It can be divided into invasion, anti-biotic and competition, one It is aggression that one organism benefits and another that is damaged; one that is damaged but the other is not affected is antibiotics; and two that exert adverse effects on each other are competition. Which of the following are competing? ['The natural enemy bee of the diamondback moth lays eggs in the larvae of the diamondback moth. When the eggs of the diamondback moth hatch into a young bee, the young bee will eat the larvae of the diamondback moth.', 'Some birds often look for parasites on crocodiles, and predators are afraid to attack these birds beside crocodiles, making them safer.', 'If the density of tadpoles in the pond is too large, the tadpoles will secrete a poison, restrict the growth and development of other tadpoles, and even increase their mortality.', 'When aphids and peach aphids are mixed to a certain density, the yield of aphids decreases significantly, but the yield of peach aphids is significantly higher than that of carrot aphids.']