Josh4444 Josh4444
  • 16-11-2017
  • Biology
contestada

What happened during the Cambrian Explosion? A. Early chordates began to appear. B. Many groups of vertebrate animals became extinct. C. Groups of dinosaurs began to evolve into the ancestors of modern birds. D. Animals evolved a variety of complex body plans.

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dudelash dudelash
  • 16-11-2017
I am pretty sure that it's D.
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