An ecosystem is a (a) group of components that interact with one another. (b) group interacting species in one place at one time. (c) biological community and component of the physical environment with which the community interacts. (d) group of interacting chemicals and their cycles.
Option C. An ecosystem is an organisation of biotic and abiotic components where the two interact with each other and maintain an energy balance. So, the correct option is 'biologic community and components of the physical environment with which the community interacts'.
