The formation of the isthmus of Panama, dividing the Pacific Ocean from the Caribbean Sea, resulted in many instances of
A) allopatric speciation.
B) sympatric speciation.
C) gene flow.
D) polyploidy.
A
Environmental & Atmospheric Sciences
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Indicate whether this statement is true or false.
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What is the geologic setting of Vancouver, British Columbia?
A. It is surrounded by low-lying hills. B. It is on a large but scenic island in the ocean. C. It is along the Fraser River and its delta. D. It is on a large but scenic island in a lake. E. None of these choices are correct.
Environmental & Atmospheric Sciences
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Indicate whether the statement is true or false.
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