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Author Question: Why are metal ores so valuable? A) They are sources of naturally occurring gold. B) Metals can ... (Read 144 times)

j.rubin

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on: Aug 27, 2018
Why are metal ores so valuable?
 
  A) They are sources of naturally occurring gold.
  B) Metals can be efficiently extracted from them.
  C) They tend to occur in scenic mountainous regions.
  D) They hold many clues to Earth's natural history.

Question 2

Where are antibiotics obtained?
 
  A) molds
  B) fungi
  C) bacteria
  D) all of the above
  E) only A and B


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abctaiwan

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Reply #1 on: Aug 27, 2018
Answer to Question 1

B

Answer to Question 2

D


j.rubin

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Reply 2 on: Aug 27, 2018
:D TYSM

nguyenhoanhat

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Reply 3 on: Yesterday
Excellent

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