So far, no dangerous and globally-spread viruses for Linux emerged.
But you should still be careful about facebook apps, since they can send your data somewhere without need to infect your system.
As there are no wild viruses for Linux there is nothing to "take them off."
There are no wild computer viruses that affect Linux. Oh wait, there was RST.b. If you need to, you can run certain windows viruses under Linux with wine.
Yes, Linux applications have significantly less viruses than Windows or Mac's OS. As Linux makes up less than two percent of OS usage, it makes no sense to the creators of viruses to make a virsus for Linux.
Linux operating systems are well protected, but not immune to viruses, and can still be afflicted by rootkits and trojans. 'Kaiten' and 'rexob' are the names of two Linux trojans. 'Brundle', 'Nuxbee' and 'VIT' are just three Linux viruses.
No, Neither Roblox of Facebook have viruses. People on Facebook do sometimes post links to viruses, and there are scams that exist on Facebook, but there are no viruses on Facebook itself. Roblox does not have viruses either. It does have virus scripts within the game, but those cannot actually harm your computer.
Yes.
A Linux system generally gets the least viruses
No. Unless you go on links from facebook, but they would have to be really complex viruses.
Facebook in itself cannot give you viruses. However, clicking on the advertisements, or using applications not developed by Facebook or a trusted company potentially can.
No, I scanned it many times and there is no viruses...
That would depend on what you want to protect Linux from. Ports are closed by default, so there is little need for a firewall. There are several anti-virus products available for Linux, but as there are very few Linux viruses, and no currently effective ones, they are only helpful in removing Windows viruses.
no