The scarps on Mercury were probably caused by A) tectonic ...

[joesmith1212]

The scarps on Mercury were probably caused by
 
  A) tectonic activity.
  B) meteorite bombardment.
  C) a tidal bulge.
  D) volcanism.
  E) the interior cooling and shrinking.

Question 2

In the proton-proton cycle, the helium atom and neutrino have less mass than the original hydrogen. What happens to the lost mass?
 
  A) It is recycled back into hydrogen.
  B) It is ejected into space.
  C) It is converted to energy.
  D) It is transformed into electrons.
  E) Conservation of mass dictates no mass can be lost.

[zoeyesther]

Answer to Question 1

E

Answer to Question 2

C

[joesmith1212]

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[zoeyesther]

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