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What part of North America contains the oldest exposed rocks?
Q1: Counter currents near the equator flow mostly:<br>A)
Q8: What causes high and low tides?<br>A) the
Q14: How did the sea cave in this
Q31: A prism- or wedge-shaped, structurally complex zone
Q45: Which of the following does NOT help
Q75: As a result of cold currents, July
Q77: This graph shows an interpretation of temperatures
Q94: What did geologists discover from studying the
Q101: In order to provide an early warning
Q117: Shale is metamorphosed into three rock types: