Why Are Biologists Uncertain About How a Species Should Be

Multiple Choice

Why are biologists uncertain about how a species should be defined?

A) Biologists argue over how to incorporate behavior into species' definitions.
B) New species usually emerge too quickly to be observed by biologists.
C) Biologists are not in full agreement on the processes that give rise to new species.
D) Biologists have not figured out how to use DNA data to determine species' statuses.