Answer the following question given this paragraph: 

An ecosystem includes the living organisms (all the populations) in an area and the non-living aspects of the environment ( Figure below ). An ecosystem is made of the biotic and abiotic factors in an area.


Q: What includes the living organisms in an area and the non-living aspects of the environment?

 Choices:

- outpost

- habitat

- degradation

- ecosystem

A:
ecosystem
