A scientist who studies life forms and their environments is called an ecologist. Ecology is a branch of biology that focuses on the interactions between organisms and their physical surroundings, including both living (biotic) and non-living (abiotic) components. Ecologists analyze how various life forms adapt to their environments and how they influence one another and their ecosystems. This field is crucial for understanding biodiversity, conservation efforts, and the impacts of human activities on different habitats. Ecologists play a vital role in addressing environmental issues and promoting sustainable practices.