What are the three types of interactions between organisms in an ecosystem?

a. competition, mutualism, and predation
b. territoriality, predation, and symbiosis
c. competition, predation, and symbiosis
d. commensalism, parasitism, and mutualism

The correct answer is c. competition, predation, and symbiosis

In predation, a predator hunts prey for another organism for food. The organism which is killed is called the prey and the organism which kill other is predator. For example a tiger is predator and deer is a prey.

Competition takes place between two organisms or species which require the same limited resource within an environment. Example of resources are light, food, shelter.

A symbiotic relationship is an interaction between at least two species in which both the interacting partners get benefit. For example lichen, a symbiotic relationship between an alga and a fungus.

i think that it is plants