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adoni [48]
3 years ago
11

Unless a series of sedimentary rock layers has been overturned, which layer is usually the oldest?

Biology
2 answers:
artcher [175]3 years ago
6 0

Answer: The bottom layer.

Explanation: The oldest layers are located at the bottom of the sedimentary rock while the youngest layers are found at the top of the rock. Sedimentary rock most times contains a lot of fossils, they constitute of organisms that have once-lived.

Xelga [282]3 years ago
5 0

the layer on the top. the layer with the most minerals.

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