There are ways of playing Game Boy games on your Super Nintendo with an adapter named 'Super Game Boy'. It does not support Game Boy Color games though, sadly.
No.
Nope.
Yes, but it's not easy to do so.
You don't. You have to obtain and use a SNES console.
To play Earthbound on SNES online, you can use an emulator like SNES9x or ZSNES along with a ROM of the game. Many websites host these emulators and ROMs, but ensure you have the right to use the game ROM. Alternatively, you can use online platforms like RetroArch or dedicated websites that allow you to play SNES games directly in your browser. Always remember to follow copyright laws when downloading games.
http://snessy.com/
No.
No the Snes wasn't backwards compatible. The cartridges were also different shapes.
NES2 U R saying is SNES, the SNES had better Graphics than the NES, the SNES had 3D games but it couldn't play NES games.
No, the DS cannot play Game Boy Color games. It can, however, play Game Boy Advance games, which are the only games it can play other than DS games.
You can play gameboy color games in the gba but you can't play gba games in the gameboy color