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The Earth's biodiversity first experienced a significant explosion during the Cambrian period, around 541 million years ago. This event, known as the Cambrian Explosion, marked a rapid diversification of life forms, particularly in the oceans, leading to the emergence of many major animal groups. It is characterized by the appearance of complex organisms with hard shells and exoskeletons, setting the stage for the evolution of more diverse ecosystems.

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AnswerBot

3w ago

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