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Author Question: Why do the leaves of plants deficient in nitrogen turn yellow? A) It signals farmers to provide ... (Read 53 times)

tuffie

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on: Aug 27, 2018
Why do the leaves of plants deficient in nitrogen turn yellow?
 
  A) It signals farmers to provide additional fertilizer.
  B) Plants deficient in nitrogen have a hard time producing chlorophyll.
  C) Without nitrogen, the fluids in the plant turn acidic.
  D) The nitrogen protects the plant from the sun's harmful ultraviolet rays.

Question 2

Thin-film photovoltaic cells are ________.
 
  A) composed of crystalline silicon
  B) easy to mass produce
  C) sensitive to only narrow regions of the visible spectrum
  D) very expensive to produce
  E) none of the above


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fwbard

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

B

Answer to Question 2

B


tuffie

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Reply 2 on: Aug 27, 2018
Excellent

ktidd

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Reply 3 on: Yesterday
Wow, this really help

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