The term for the natural environment in which an organism lives is "habitat." A habitat provides the necessary conditions and resources, such as food, water, shelter, and mates, for an organism's survival and reproduction. Habitats can vary greatly depending on the species and can include forests, deserts, wetlands, grasslands, and aquatic environments. Understanding habitats is critical for the study of ecology, conservation, and biodiversity, as disruptions to these natural environments can significantly impact the organisms that rely on them for survival.