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Author Question: Due to the incredible size of the universe, our search for extraterrestrial life will probably be ... (Read 43 times)

cookcarl

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on: Jul 27, 2018
Due to the incredible size of the universe, our search for extraterrestrial life will probably be limited to within our
 
  A) Local Group of galaxies
  B) Local Supercluster of galaxies
  C) Milky Way galaxy
  D) solar system

Question 2

The two families of fundamental particles out of which all ordinary matter is made are
 
  A) protons and neutrons.
  B) leptons and quarks.
  C) electrons and neutrinos.
  D) quarks and neutrinos.
  E) leptons and photons.


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ciecieme

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

C

Answer to Question 2

B


cookcarl

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Reply #2 on: Jul 27, 2018
TY


ciecieme

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Reply #3 on: Jul 27, 2018
You're welcome


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