What's the fundamental reason that Mars, unlike the Earth, has ...

[jasdeep_brar]

What's the fundamental reason that Mars, unlike the Earth, has become virtually geologically dead?
 
  A) its farther distance than Earth to the Sun B) its rapid rotation compared to the Earth
  C) its closer distance than Earth to the Sun D) its small size compared to Earth
  E) its slow rotation compared to the Earth F) its large size compared to the Earth

Question 2

The brightest and probably youngest surface of any moon of Saturn belongs to
 
  A) Iapetus. B) Mimas. C) Tethys. D) Enceladus. E) Titan.

[mmpiza]

Answer to Question 1

D

Answer to Question 2

D

[jasdeep_brar]

Excellent

[mochi09]

Gracias!