The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from____________ ?

(A) Ionosphere ()
(B) Troposphere (X)
(C) Mesosphere (X)
(D) Stratosphere (X)
(E) None of these (X)

Answers: The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from  Ionosphere.