Select the potential problems with using current dispersal barriers (for example, a mountain range) to delineate biogeographical regions. Check all that apply.
A. A barrier for one group of organisms may not be a barrier for another group of organisms.
B. Global climate change may change the distribution of taxa and the size and/or location of some of the dispersal barriers.
C. The world's biota correspond more closely to political boundaries.
D. Human conflicts lead to ever-changing political boundaries.
E. Distantly related organisms with similar appearance and habits may exist on either side of a dispersal barrier.
Answer: B. Global climate change may change the distribution of taxa and the size and/or location of some of the dispersal barriers.
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