Question

Most of uranus's atmosphere is composed of

a. helium and hydrogen.
b. oxygen and nitrogen.
c. carbon dioxide and methane.
d. nitrogen and hydrogen.

Answer 1

The atmosphere of Uranus is composed of hydrogen and helium. So, it is A.

Answer 2

So the question is what gases form the atmosphere of Uranus. So Uranus and Neptune are classified as "ice giants". They have a similar atmosphere to "gas giants" Saturn and jupiter and Neptunes atmosphere is primarily composed out of hidrogen and helyum. So the correct answer is a.