While ________ gas is the main atmospheric component of both Mars ...

[fnuegbu]

While ________ gas is the main atmospheric component of both Mars and Venus, its density means it plays a far larger role in heating Venus.
 
  Fill in the blank(s) with correct word

Question 2

Which of the following features is not a feature of central dominant galaxies?
 
  A) They are often spiral galaxies.
  B) They often have multiple galactic nuclei near their centers.
  C) They are thought to form by the merger of several smaller galaxies.
  D) They're found in clusters of galaxies.

[emily12345]

Answer to Question 1

carbon dioxide

Answer to Question 2

A

[fnuegbu]

Thank you!

[emily12345]

Always glad to help...