Features of the environment that are alive or were once alive are called?

Features of the environment that are alive or were once alive are called biotic factors. These include all living organisms such as plants, animals, fungi, and microorganisms, as well as the remains or products of living organisms, like dead leaves or fossils. Biotic factors interact with abiotic factors, which are the non-living components of the environment, to shape ecosystems. Together, they influence the dynamics and health of the environment.