Why is the southern hemisphere of Mars believed to be older than ...

[chandani]

Why is the southern hemisphere of Mars believed to be older than the northern?
 
  A) The southern hemisphere is darker much like the lunar mare.
  B) The southern hemisphere is more heavily cratered.
  C) The northern hemisphere is higher, due to the Tharsis Bulge.
  D) The northern hemisphere leans more away from the Sun in winter.
  E) The south polar cap is much thicker than the north one.

Question 2

________ is the scientific study of the distribution of electromagnetic waves by energy and how these patterns are created in atoms and molecules.
 
  Fill in the blank(s) with correct word

[popopong]

Answer to Question 1

B

Answer to Question 2

Spectroscopy

[chandani]

Excellent

[adammoses97]

Thanks for the timely response, appreciate it