Competition is a fundamental ecological interaction where two or more organisms or groups vie for limited resources, such as space, nutrients, sunlight, or mates. This interaction is quantified as a biotic stressor and is a primary driving force in the evolution and structuring of biological communities. When multiple species or populations compete, the intensity of the competition dictates the fitness of the individuals involved; those that are better equipped to utilize scarce resources or adapt to the specific limiting factor often experience higher survival rates and reproductive success. The outcomes of competition can lead to niche differentiation, character displacement, or, in extreme cases, the exclusion of less successful populations from an area, thus helping maintain biodiversity and ecological balance within a given environment.