The figure below shows histograms of Sr isotopic compositions for modern mid- ocean ridge basalts (MORB) and granites and gneisses of variable ages. From the following hypotheses, choose the three hypotheses that best explain the histograms' data.

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A: in a map view of a geologic dome as shown in Figure 5, what is true about the age of rocks?

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A: Relate the fundamentals of the depositional environment in the study of Geomorphology.