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

Multiple Choice

A small number of birds arrive on an island from a neighboring larger island. This small population begins to adapt to the new food plants available on the island as selection favors those birds with larger beaks. About twice a year, one or two more birds from the neighboring 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 retard adaptation to the new food plants
D) represent a colonizing event