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A geologist studies layered rock to determine its age. Bacteria fossils from the Precambrian age are found in the rock’s upper layers, but no fossils are found in the rock’s bottom layer. Which of these conclusions about the rock is bet supported by evidence?

Sagot :

audrey123488
Answer:
The bottom layers of the rock could have formed before life occurred.

Explanation:
The bottom layers of the rock could have formed before life occurred because there is no fossil is present. If there is life at that time so the fossils are present at the bottom layer so the absence indicates that is no life present at that time. The bottom layer is older than the upper layer so that's why fossils of bacteria are found in the upper layer of the rock.

Answer:
C. Because bacterial fossils are found only in the upper layers, scientists can conclude that these bacteria evolved towards the end of Precambrian time.

There’s two different types of answers for this question so I just put both of them. Hope it helps : )

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