Which term describes the movement of organisms TO a new area?

The term that describes the movement of organisms to a new area is immigration. Immigration specifically refers to the arrival of individuals into a population in a new location, which can contribute to that population's growth and genetic diversity. This term is commonly used in ecological and environmental contexts to discuss how species expand their range or colonize new habitats.

Migration typically refers to a seasonal movement of animals from one region to another and back again, often for breeding or feeding purposes. Dispersal describes the process by which individuals spread away from their point of origin, but it is a more general term that can include both movement into and out of an area. Emigration, on the other hand, specifically involves leaving one's current location to settle in a new one, which is not the same as moving to a new area.