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BiologyBiology
17 January, 06:59

21. When did the Precambrian era end?

approximately 5.4 million years ago

approximately 2 million years ago

approximately 100,000 years ago

approximately 540 million years ago

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Answers (2)
  1. 17 January, 08:33
    0
    Answer: The Precambrian era ends abot 540 million years ago.

    Explanation:

    The Precambrian era is the first geologic era of the Earth, it initiates from the Earth's formation (4600 million years ago) and ends at the beginning of the Cambrian era (541 million years ago). It is the longest geologic era of the Earth.
  2. 17 January, 09:39
    0
    Answer: approximately 540 million years ago
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