The science that deals with the relationship of various organisms with their environment is known as-

Explanation

Explanation: Ecology was first coined by the German biologist Ernst Haeckel in 1866, who defined it as "the comprehensive science of the relationship of the organism to the environment." Ecology is the science treating the reciprocal relations of organisms and the external world. It is the functional unit of the ecological system which involves complex actions occurring between its biotic and biotic components. The term Ecology system was first used by A.G. Tensley. Dr. Ramdev Mishra is known as the father of ecology in India. He founded the International Society for Tropical Ecology in the year 1956.