Well, like most isolated islands, only those animals capable of swimming, rafting or flying from the continental United States, South America and Europe, and those plants whose seeds are dispersed by birds or are able to float and drift in the currents, were able to inhabit the island before human settlement.
(most isolated islands; rafting; ) (most isolated islands; flying; from the continental United States, South America and Europe)
most isolated islands most isolated islands
rafting flying
from the continental United States, South America and Europe