Ans: The study of the interrelationship between organisms and their environment is called ecology.
Branch of science concerned with the interrelationship of organisms and their environments.
The totality or pattern of relations between organisms and their environment.
Ecology is the scientific analysis and study of interactions among organisms and their environment. It is an interdisciplinary field that includes biology, geography, and Earth science. Ecology includes the study of interactions organisms have with each other, other organisms, and with abiotic components of their environment.
What is a species?
A species is a group of organisms which can interbreed freely in nature, to produce fertile offspring.
A species is often defined as the largest group of organisms in which two individuals are capable of reproducing fertile offspring, typically using sexual reproduction. While in many cases this definition is adequate, the difficulty of defining species is known as the species problem.