The geysers and hot springs of Yellowstone National Park result ...

[bio_gurl]

The geysers and hot springs of Yellowstone National Park result from
 
  A) thin continental crust separating and creating a rift valley.
  B) plumes of hot mantle rising in a hot spot within a plate.
  C) plates that have slipped sideways relative to each other, creating a fault.
  D) a plate that has run up against an existing continental plate.
  E) a fault.

Question 2

How does a 1.2-solar-mass white dwarf compare to a 1.0-solar-mass white dwarf?
 
  A) It has a larger radius.
  B) It has a smaller radius.
  C) It has a higher surface temperature.
  D) It has a lower surface temperature.
  E) It is supported by neutron, rather than electron, degeneracy pressure.

[duke02]

Answer to Question 1

B

Answer to Question 2

B

[bio_gurl]

Excellent

[sultana.d]

Gracias!