Official 54 Lec 2
Question 4 of 6
Why does the professor describe the composition of the sediment of the earliest rivers?

A.

To identify the evidence used to determine how the rivers flowed

B.

To explain why the rivers could easily dry out

C.

To suggest that the sediment was once fine sand

D.

To suggest that the geological record might be flawed

正确答案:A

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