An ecosystem is...

... a place or ( biotope), the living things that live in it (biocoenosis) and the interactions among them.

  ·COMPONENTS

- Abiotic factors ( biotope): Encompasses the non-living components of the ecosystem.
- Biotic factors ( biocoenosis): Is made up of all the living organisms that inhabit the biotope.

- Interactions between them:   - Abiotic factors influence each others and affect the biocoenosis. 
                                                             - Biotic factors influence each other and affect the biotope.