A cross section of rock layers is shown here, including a layer labeled with the letter X and an arrow. Which argument is supported by the presence of the fossilized seashells in the layer labeled 'X'?

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asked Aug 28, 2023 133k views

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A cross section of rock layers is shown here, including a layer labeled with the letter X and an arrow. Which argument is supported by the presence of the fossilized seashells in the layer labeled 'X'? A) This layer was once a desert region. B) This layer was once beneath the ocean. C) This layer was once beneath a flooded forest. D) This layer was created by a landslide from a mountaintop.