That's a great question! It's a bit tricky, because while biology focuses on living things, understanding the non-living components of the environment is crucial to understanding how life functions. Here's a breakdown:

Biology primarily studies living things:

* Focus on life: Biology investigates the structure, function, growth, origin, evolution, and distribution of living organisms. This includes everything from microscopic bacteria to giant whales.

* Living things: Biology is all about the characteristics that define life - things like metabolism, reproduction, response to stimuli, and adaptation.

But, studying non-living things is important too:

* Environment: The environment in which living things exist is composed of both living and non-living factors. For example, understanding the chemistry of water, the physics of light, and the geology of soil are essential for understanding how organisms survive and thrive.

* Interdependence: Living organisms interact with their non-living environment in countless ways. For example, plants use sunlight and water to grow, animals breathe air, and bacteria decompose organic matter to release nutrients.

* Branches of Biology: Certain fields of biology, like Ecology (study of how organisms interact with each other and their environment) and Biochemistry (study of the chemical processes of life), heavily involve studying non-living components.

So, the short answer is: While biology's primary focus is on living organisms, studying non-living things is an essential aspect of understanding how life works within the context of its environment.