For the Pleiades, a fifty-million-year-old cluster, we find ...

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For the Pleiades, a fifty-million-year-old cluster, we find classes ________ and ________ already leaving the main sequence, making the seven bright giants in the seven sisters.
 
  Fill in the blank(s) with correct word

Question 2

Where do most dust grains form?
 
  A) in molecular clouds
  B) in the winds of red giant stars
  C) in planetary nebulae
  D) in supernovae
  E) all of the above

[kxciann]

Answer to Question 1

O; B

Answer to Question 2

B