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30 votes
Part A: Identify the oldest rock layer shown in the diagram. Be sure to explain your reasoning.

Part B: Scientists think that the trilobite fossil found only in layer d became extinct soon after layer d was formed. Using evidence from the cross-section, explain why this statement is true or not.

User Anunaki
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1 Answer

29 votes
29 votes

Answer: none

Explanation:none

User Jeson
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