The Permian mass extinction is associated with ________.
A) an asteroid impact
B) global warming
C) the formation of Pangaea
D) the diversification of mammals
Correct Answer:
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Q1: The type of reproductive barrier that occurs
Q3: A period of mass extinction is often
Q4: When two frog species, Rana pipiens and
Q5: Dinosaurs (aside from the lineage that produced
Q6: A reproductive barrier that prevents individuals from
Q7: Feathers in birds appear to have first
Q8: Sympatric speciation specifically EXCLUDES _.
A)behavioral isolation
B)postzygotic barriers
C)geographic
Q9: Uranium-235, with a half-life of 713,000,000 years,
Q10: The actions of humans are having negative
Q11: Biological species consist of groups of _.
A)populations
B)domains
C)families
D)genera
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