Which of the following is NOT among the
events that may have led to the explosion of
animal diversity 542 - 488 million years ago?
a. increase in oceanic carbon dioxide
concentrations
b. decreased gene flow caused by the breakup
of the supercontinents
c. evolution of predation
d. mutations in homeotic genes
e. all of these are among the events that led to
the explosion of animal diversity 542 - 488
million years ago
A
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