The origin of the very thin but measurable atmosphere of molecular oxygen around Jupiter's moon Europa is from:
A) dissociation of water vapor by solar UV radiation.
B) the remnant gases from Jupiter that reside within its magnetosphere.
C) primitive plant life living in the extensive oceans underneath the icy surface, which has transformed carbon dioxide into oxygen.
D) volcanoes that have ejected this gas during recent eruptions.

Question

Quizplus · Accepted Answer

The very thin but measurable atmosphere of molecular oxygen around Jupiter's moon Europa is believed to be the result of dissociation of water vapor by solar UV radiation. This process breaks apart water molecules into hydrogen and oxygen atoms, with the oxygen atoms combining to form molecular oxygen, which creates the very thin atmosphere.

The Origin of the Very Thin but Measurable Atmosphere of Molecular