Question

The outer planets—Jupiter, Saturn, Uranus, and Neptune—are made up of which gases?

A.methane, carbon dioxide, and ammonia
B.methane, helium, and ammonia
C.hydrogen, helium, and ammonia
D.hydrogen, carbon dioxide, and ammonia

Answer 1

C Hydrogen, helium and ammonia

Answer 2

The Outer Planets, or Gas Giants, include Jupiter, Saturn, Uranus and Neptune. They are characterised by colourful, turbulent, cloudy atmospheres and do not have a solid surface on which one could land. Their atmospheres are mainly hydrogen and helium, with traces of other gases giving them their rich colours.






Therefore.: The answer would Be C.hydrogen, helium, and ammonia As @GuitarNerd2015
had said. (:

Answer 3

hydrogen definitely, because that's the most abundant element so that eliminates A, and B. I would assume that Helium is more common on the sun. i agree with @chrissyC. and the guitar nerd