The Atmospheres of Uranus and Neptune Consist Mostly of

Multiple Choice

The atmospheres of Uranus and Neptune consist mostly of

A) methane,with small quantities of hydrogen and helium.
B) hydrogen and helium,with significant amounts of methane,ammonia,and water vapor.
C) carbon dioxide,with a small amount of nitrogen.
D) hydrogen and helium,with significant amounts of methane and water vapor but very little ammonia.