GRE Text Completion Question 772
Some paleontologists debate whether the diversity of species has (i) _____ since the Cambrian period, or whether imperfections in the fossil record only suggest greater diversity today, while in actuality there has been either (ii) _____ or decreased diversity.
|A change||D stasis|
|B declined||E escalation|
|C increased||F discontinuity|
Correct Answer: CD