Ecology is the branch of biology that studies the relationships between organisms and their environment. It examines how biotic components, such as living communities, interact with abiotic factors, including physical elements like climate, water, and soil. Core ecological concepts include energy flow, nutrient cycling, population dynamics, and biodiversity, which collectively describe the structure and function of natural systems. The discipline analyzes processes ranging from microscopic biochemical interactions to global biogeochemical cycles, providing frameworks for understanding how life is distributed and maintained across diverse habitats.