12. What do many scientists conclude about vertebrates from studying their embryological development? * A. Vertebrates with gills are more likely to survive than those without gills. B. Vertebrates have

12. What do many scientists conclude about vertebrates from studying their embryological development? *

A. Vertebrates with gills are more likely to survive than those without gills.
B. Vertebrates have changed, or evolved, over time.
C. Vertebrates might have evolved into one another.
D. All vertebrates might share a common ancestor.

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