A Small Number of Birds Arrive on an Island from a Neighbouring

Multiple Choice

A small number of birds arrive on an island from a neighbouring larger island. This small population begins to adapt to the new food plants available on the island, and their beaks begin to change. About twice a year, one or two more birds from the neighbouring island arrive. These new arrivals ________.

A) speed up the process of speciation
B) tend to promote adaptation to the new food plants
C) tend to slow adaptation to the new food plants
D) represent a colonising event response