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A soil that is rich in clay and expands by more than 6% is an expansive soil.
Q5: The concentric zones surrounding an igneous intrusion,and
Q13: Why are some places (e.g.,northern California)more likely
Q30: A lahar is a volcanic mud flow.
Q42: Salt crystals can exert enough force to
Q46: Divergent plate boundaries are responsible for most
Q48: The velocity of S-waves is _ than
Q51: On the basis of what three criteria
Q61: Name three factors that determine whether a
Q62: Columnar joints caused by the contraction of
Q75: A delta with long,fingerlike sand bodies,each deposited