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What happened to the shells in layers 2, 3, 4, & 5

What happened to the shells in layers 2, 3, 4, & 5-example-1

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Answer:

B) The shells present went through gradual changes and were present in all layers.

Explanation: The shells present went through gradual changes and were present in all layers. If you compare the layers, you can see gradual changes between the shells from 2, 3, 4, & 5.

User Momin Bin Shahid
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