Answer the following question given this paragraph: 

All living things depend on their environment to supply them with what they need, including food, water, and shelter. Their environment consists of physical factors—such as soil, air, and temperature—and also of other organisms. An organism is an individual living thing. Many living things interact with other organisms in their environment. In fact, they may need other organisms in order to survive. For example, living things that cannot make their own food must eat other organisms for food. Other interactions between living things include symbiosis and competition.


Q: In an environment, symbiosis, competition, and relying on other organisms for food are examples of what?

 Choices:

- collaboration

- commensalism

- adaptation

- interaction

A:
interaction
