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Author Question: All dunes have crests oriented perpendicular to the direction of wind movement. Indicate whether ... (Read 59 times)

sc00by25

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on: Jul 13, 2018
All dunes have crests oriented perpendicular to the direction of wind movement.
  Indicate whether the statement is true or false

Question 2

What is an expansive soil?


sabina576

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Reply #1 on: Jul 13, 2018
Answer to Question 1

False

Answer to Question 2

Some soils contain clay minerals that increase in volume when wet and shrink when they dry out. Any soil that expands 6 or more is an expansive soil.


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