The composition of Mercury's crust is: A) deficient in ...

[ericka1]

The composition of Mercury's crust is:
 
  A) deficient in volatile compounds that contain elements such as sulfur and potassium.
  B) consistent with material from the solar wind, indicating that Mercury has collected material over the last few billion years.
  C) similar to the crust of the other terrestrial planets.
  D) nearly identical to Mercury's mantle material.

Question 2

Explain how the eccentricity describes the shape of an ellipse.
 
  What will be an ideal response?

[lucas dlamini]

Answer to Question 1

C

Answer to Question 2

The higher the eccentricity, the more elongated the oval; a circle has an eccentricity of zero, while very stretched out comet orbits approach an eccentricity of one.

[ericka1]

TY

[lucas dlamini]

You're welcome