What is the name of the form of struggle for existence when a predator eats its prey?

There are three forms of struggle for existence. They were noticed and described by Charles Darwin. The first form of struggle is intraspecific struggle. This is when organisms of the same species compete with each other for the best habitat, food, sexual partners, and so on. The second form is interspecific. This includes the struggle of representatives of different species, including predation, the struggle for territory, and so on. The third form of struggle is the struggle against unfavorable conditions. This includes warming, cooling, wind and other factors of nature.

Answer: interspecies struggle.