»Inpassive transport, molecules or ions move along theirconcentration gradient(downhill). It may be via simplediffusionor through the aid of a membrane protein molecule (facilitated diffusion). This is the m
passive dispersal See all related content dispersion, in biology, the dissemination, or scattering, of organisms over periods within a given area or over the Earth. Thedisciplinesmost intimately intertwined with the study of dispersion aresystematicsand evolution. Systematics is concerned with the relati...