I mean, it makes sense for her being the only sick planet of the system.
“Yeah durr, we pollute the Earth with gasses and stu…” No I mean, Earth is the only planet in our solar system that has life (for now), you know, humans, animals, plants and stuff, while the other planets don’t have such thing, you could replace “life” with “bacteria” or “viruses” and it would make sense.

>Sick.
>Flat.
>Cute.
>Galaxy clothing.
>Zettai Ryouiki

Best girl, no contest.