According to the fossil record, when did episodes of rapid speciation commonly take place?
A B C D
while Earth's continents were joined while Earth's habitats were stable before major climatic changes following mass extinctions
Question: According to the fossil record, when did episodes of rapid speciation commonly take place?
(A) while Earth's continents were joined
(B) while Earth's habitats were stable
(C) before major climatic changes
(D) following mass extinctions

Answer: (D) following mass extinctions
Answer: (C) before major climatic changes
Question: According to the fossil record, when did episodes of rapid speciation commonly take place?
(A) while Earth's continents were joined
(B) while Earth's habitats were stable
(C) before major climatic changes
(D) following mass extinctions
Answer: (D) following mass extinctions