“Territorial behavior” for uniform dispersion is most likely a result of. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Population ecology links individual births, deaths, immigration, and emigration to changes in abundance. Per-capita rates determine the direction of change, while density dependence creates feedback when crowding alters survival or reproduction. The remaining alternatives—“Social attractions”, “Resource abundance”, “Random spacing”—refer to different states, processes, or scale
Ref:
Campbell Biology, Urry et al., 12th Ed., Unit 8 Ecology