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Author Question: The very first stars in the universe were made of A) hydrogen and helium. B) hydrogen and helium, ... (Read 596 times)

sheilaspns

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on: Jul 27, 2018
The very first stars in the universe were made of
 
  A) hydrogen and helium. B) hydrogen and helium, 10 heavy elements.
  C) hydrogen and helium, 0.1 heavy elements. D) hydrogen and helium, 2 heavy elements.

Question 2

The ozone layer blocks much of the Sun's ________ radiation.
 
  A) gamma ray B) X-ray C) radio D) infrared E) ultraviolet


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mcomstock09

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

A

Answer to Question 2

E


sheilaspns

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Reply #2 on: Jul 27, 2018
TY


mcomstock09

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


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