Answer the following question given this paragraph: 

Abiotic factors are the nonliving parts of ecosystems. They include air, soil, and other things organisms need. They determine which organisms — and how many of them — can live in an ecosystem.


Q: What are the nonliving parts of ecosystems like soil and air called?

 Choices:

- exemplified factors

- irrelevant factors

- inorganic factors

- abiotic factors

A:
abiotic factors
