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    Understanding Earth
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    Exam 5: Sedimentation: Rocks Formed by Surface Processes
  5. Question
    Research Suggests That Bulk Seawater Chemistry Has Not Changed Much
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Research Suggests That Bulk Seawater Chemistry Has Not Changed Much

Question 50

Question 50

Multiple Choice

Research suggests that bulk seawater chemistry has not changed much over the last 1.8 billion years.This observation is supported by the study of what kind of sedimentary rock?


A) sandstone
B) limestone
C) chert
D) evaporites

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