Biology, 02.10.2020 18:01 graceaowen

Which statement describes the law of superposition? Sedimentary rocks were originally in horizontal layers.
In horizontal rock layers, each layer is younger than the one below it.
Rock layers must be in existence before something can happen to them.
Rocks that are not in horizontal layers were shifted by some geologic event.

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Which statement describes the law of superposition? Sedimentary rocks were originally in horizontal...