【单选题】Since the Hawaiian Islands have never been connected to other landmasses, the great variety of plants in Hawaii must be a result of the long-distance dispersal of seeds, a process that requires both a...
A.
discussing different approaches biologists have taken to testing theories about the distribution of plants in Hawaii
B.
discussing different theories about the transport of plant seeds to Hawaii
C.
discussing the extent to which air currents are responsible for the dispersal of plant seeds to Hawaii
D.
resolving a dispute about the adaptability of' plant seeds to bird transport