Author Question: Air pollution helps protect building stone from weathering. Indicate whether the statement is true ... (Read 138 times)

appyboo

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Air pollution helps protect building stone from weathering.
  Indicate whether the statement is true or false

Question 2

Alternating wetting and drying can facilitate soil creep.
  Indicate whether the statement is true or false



mjbamaung

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Answer to Question 1

F

Answer to Question 2

T



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