system
Given the following post, respond as if you're commenting on Reddit:
human
Why does Uranus look more uniform and less streaky than Neptune when they have similar atmospheric compositions?

Uranus looks way more uniform than Neptune, and it's also a lighter shade of blue. 

If they have very similar atmospheric compositions, mustn't their appearances be nearly the same?
gpt
For some reason - it's not totally clear why - Uranus produces less internal heat than Neptune. The heat sources cause Neptune's clouds to billow up and create interesting structures, while Uranus is more uniform.

Additionally, very small differences in chemical composition can make a big difference in visible properties. It doesn't take very many molecules to make something opaque - think about how thin a piece of paper is. Uranus has a thin haze in the upper atmosphere that makes it even more featureless.