Dark environments are areas with little to no light, making it difficult to see. These settings can be found in places like caves, deep forests at night, or even inside buildings with no windows. In such environments, the absence of light affects visibility and can influence the behavior of animals and humans. In dark environments, certain adaptations occur. For example, many nocturnal animals have enhanced senses, such as improved hearing or smell, to navigate and hunt. Additionally, some plants, like fungi, thrive in low-light conditions, relying on decaying matter for nutrients instead of sunlight.