Discussion
The Precambrian is remarkable for comprising
Answer: A
Correct answer: about seven eighths of geological time
The Precambrian runs from 4,600 to 541 million years ago - some 4,060 million years, or 88 per cent of the whole. That the familiar fossil-bearing record occupies only the last eighth is worth keeping in mind: most of the earth’s history is comparatively poorly known.
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