Answer : Ecology is the study about the ecosystems which comprises of elements like living organism and non-living organism in the environment and they are divided into several stages
Explanation: Levels present in ecology are as follows:-
- Ecosystem is the biological system in which organisms show the interaction between the environment and their self.
- Organism are the smallest part of the ecological unit
- Population describes the number of individuals present which are of same species .
- Landscape is the surface that contains more than one ecosystems.
- Biosphere is called as global ecosystem etc.