What is the term for an organism's role within its habitat?

The term that describes an organism's role within its habitat is "niche." In ecology, a niche encompasses not just the physical space an organism occupies but also its role in the ecosystem, including its behavior, resource use, and interactions with other organisms. This concept helps to understand how different species coexist and how they contribute to the dynamics of their ecosystem.

The other terms represent broader ecological concepts. A community refers to the various species that live and interact in the same area. The environment encompasses all the surrounding conditions, both biotic and abiotic, that affect an organism. A biome is a large-scale ecological classification defined by climate, vegetation, and animal life, such as deserts or forests. Together, these concepts provide context, but the specific role of an organism within its environment is distinctly identified by the term "niche."