Which planet experiences the greatest change between its actual ...

[cartlidgeashley]

Which planet experiences the greatest change between its actual day temperature and actual night temperature?
 
  A) Mercury
  B) Venus
  C) Earth
  D) Mars

Question 2

When we say that the Sun is a ball of plasma, we mean that
 
  A) the Sun is made of material that acts like a liquid acts on Earth.
  B) the Sun is made of atoms and molecules.
  C) the Sun consists of gas in which many or most of the atoms are ionized (missing electrons).
  D) the Sun is roughly the same color as blood.

[Li Jun]

Answer to Question 1

A

Answer to Question 2

C