Author Question: Rare-earth elements are called that because they are very rare. Indicate whether the statement is ... (Read 97 times)

APUS57

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Rare-earth elements are called that because they are very rare. Indicate whether the statement is true or false.

Question 2

Due to the long history of environmental damage from acid-mine drainage, present-day mines can no
  longer be developed in a sulfide ore body. Indicate whether the statement is true or false.




kkenney

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Answer to Question 1

T

Answer to Question 2

F



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