noemiarellano1227 noemiarellano1227

13-01-2023
Biology

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About 530 million years ago, the most advanced life-form on the planet were aquatic burrowing worms. Within a few million years, the ocean was filled with starfish, sponges, jellyfish, mollusks, and the ancestors of true fish. Scientists refer to this period as the Cambrian Explosion. Which of the statements below best explains what happened during the Cambrian Explosion?

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