This is a great example of an analogy! Here's how it works:

* Biotic refers to living things, like plants and animals.

* Abiotic refers to non-living things, like rocks, water, and sunlight.

So, the analogy is:

* Biotic (living) is to bird (living thing) as abiotic (non-living) is to rock (non-living thing).

Let me know if you'd like to try another analogy!