A jungle, or tropical rainforest, refers to a type of dense, equatorial forest characterized by high humidity, high temperatures, and consistent rainfall. These ecosystems exhibit extraordinary biodiversity, supporting complex vertical stratification, from the forest floor to the canopy. The immense density of flora and fauna facilitates unique biochemical cycles, including rapid nutrient cycling and high rates of decomposition. The structure of the forest canopy significantly influences local microclimates, creating shaded, stable environments at lower levels. These biomes are critical global reservoirs of biological resources and function as major regulators of global atmospheric components through processes like carbon sequestration.