Some paleontologists debate whether the diversity of species has_____ since the Cambrian period, or whether imperfections in the fossil record only suggest greater diversity today, while in actuality there has been either_____ or decreased diversity.
Blank(i) Blank(ii)
A.change
B.declined
C.increased
D.stasis
E.escalation
F.discontinuity
Blank(i) Blank(ii)
A.change
B.declined
C.increased
D.stasis
E.escalation
F.discontinuity
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