Plate tectonics is currently found A) on all of the ...

[pane00]

Plate tectonics is currently found
 
  A) on all of the terrestrial planets
  B) only on Venus and the Earth
  C) only on the Earth, Venus and Mars
  D) only on the Earth

Question 2

A material which has the ability to rotate the direction of polarization of linearly polarized light is said to be
 
  A) circularly polarized.
  B) birefringent.
  C) optically active.
  D) dichroic.
  E) diffraction limited.

[bblaney]

Answer to Question 1

D

Answer to Question 2

C

[pane00]

Wow, this really help

[jackie]

Thanks for the timely response, appreciate it