One of the strongest lines of evidence of a meteor or comet impact in the late Cretaceous is
A. the extinction of the dinosaurs.
B. a thin layer of potassium-40 in late Cretaceous fossil strata.
C. a thin layer of iridium-enriched clay in late Cretaceous fossil strata.
D. the warming of Earths climate in the late Cretaceous.
Answer:C
One of the strongest lines of evidence of a meteor or comet impact in the late Cretaceous is
A. the extinction of the dinosaurs. B. a thin layer of potassium-40 in late Cretaceous fossil strata. C. a thin layer of iridium-enriched clay in late Cretaceous fossil strata. D. the warming of Earths climate in the late Cretaceous.