Seasonal variations on Mars are due A) only to its changing ...

[tth]

Seasonal variations on Mars are due
 
  A) only to its changing distance from the Sun
  B) only to its axis tilt
  C) to changes in the amounts of energy emitted by the Sun
  D) both to its axis tilt and its changing distance from the Sun

Question 2

Radiative energy is
 
  A) heat energy.
  B) energy from nuclear power plants.
  C) energy carried by light.
  D) energy of motion.

[gasdhashg]

Answer to Question 1

D

Answer to Question 2

C

[tth]

Thanks for the timely response, appreciate it

[zacnyjessica]

Excellent