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Author Question: In order to distinguish between wavelengths independent of light intensity, one must have at least ... (Read 102 times)

rachel9

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on: Jun 19, 2018
In order to distinguish between wavelengths independent of light intensity, one must have at least _____visual pigment(s).
 
  A) one
  B) two
  C) three
  D) four

Question 2

Most computer databases
 
  a. allow searches only by subject terms.
  b. do not contain a great proportion of the relevant articles.
  c. are updated about once every two years.
  d. allow keywords to be combined to make the search more specific.


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batool

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Reply #1 on: Jun 19, 2018
Answer to Question 1

B

Answer to Question 2

d


rachel9

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Reply 2 on: Jun 19, 2018
Gracias!

kalskdjl1212

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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