How do the atmospheres of the Moon and Mercury compare? A) ...

[folubunmi]

How do the atmospheres of the Moon and Mercury compare?
 
  A) Mercury's is much denser, like Venus, with much carbon dioxide.
  B) They are about equal, each only 1 as dense as ours.
  C) The cooler Moon retains a thicker nitrogen atmosphere.
  D) As no spacecraft has yet landed there, no information exists about Mercury's.
  E) Neither body has a permanent true atmosphere.

Question 2

A fatal flaw with Ptolemy's model is its inability to predict the observed phases of:
 
  A) the Sun during an eclipse.
  B) the Moon in its monthly cycle.
  C) Mercury and Venus.
  D) Mars and Jupiter.
  E) Jupiter and Saturn.

[irishcancer18]

Answer to Question 1

E

Answer to Question 2

C