Larger islands compared to smaller islands:
“Have lower extinction rates” for larger islands compared to smaller islands. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Island biogeography explains species richness as a dynamic balance between immigration and extinction. Immigration generally declines as an island fills with species, whereas extinction rises as more species divide finite area and maintain smaller populations. The remaining alternatives—“Have higher extinction rates”, “Have lower immigration rates”, “Have less species richn
Ref: The Theory of Island Biogeography, MacArthur & Wilson, Ch. 2-4
