Composed of hydrogen and helium are the majority, but deep with the composition of ammonia methane mixed in. Uranus radiate heat away from the belt a little more maybe inside there is no rupture.
Composed mostly of hydrogen and helium. But deep down, a component of ammonia, methane mixed with Uranus radiate heat away from the little star. May be due to the lack of collapse then.
Is composed of hydrogen and helium. But deep down the components of ammonia, methane, mixed with Uranus inlet from little star. Because no internal deformation.