24. History of Life on Earth
History of Life on Earth
Multiple Choice
Multiple ChoiceWhich of the following best describes how the breakup of Pangaea affected evolution?
A
Mammals had an opportunity to become dominant.
B
Shallow marine habitats became scarcer.
C
Extensive glaciation caused mass extinctions.
D
Sympatric speciation became the primary means by which new species were formed.
E
The geographic isolation of populations that had previously coexisted led to speciation.
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