Why do scientists know very little about life in the Precambrian eon? (1 point) There was no life on Earth during that eon. There are few fossils from that time. All of these forms of life are now extinct. The eon started with a mass extinction WILL MARK. BRAINLEYEST

The Precambrian fossil record is poor, and Many Precambrian rocks are heavily metamorphosed, obscuring their origins, while others have either been destroyed by erosion, or remain deeply buried beneath Phanerozoic strata. so they also found out about the precambrian eon from rocks.

Explanation:

emerging idea only occurs as a raw idea that could appear out of nowhere. meanwhile, to reach scientific consensus , that idea must be structured and tested over and over again through various experiments. the scientific consensus transforms the raw idea into idea that is more reliable through the process of scientific elimination.