Each side has a different goop in it so he probably picks which to use based on his mood, to fit with his duality theme.

No, they live in a more of a feudalistic society.  The weak are killed and the lowbloods enslaved but everybody has a house and being gay is legal so what else can you ask for?

On her intro page it says she enjoys landscaping and tree trimming so she probably enjoys gardening as well.

Baby trolls are wrigglers, grubs are something different

When you’re alive you can travel the dreambubbles while you sleep or if you are actually passing through the dreambubbles.  Karkat did both once, it was kinda funny.

If you’re dead, you’re ghost lives there.

The areas in the dreambubbles are made up of the memories of those inside it.

Yes.  See: Davesprite, Tavrisprite, Fefetasprite and all the trolls’ sprites.

She ascended here, when Bec Noir killed her dreamself that was sleeping on her Sacrificial Slab

I love you too random anon, thanks for following

Yes, it was set 612 sweeps after the trolls played Sgrub

They were kinda in a different dimension.