How can bacteria survive on dry surfaces?

Dont bacterias need a moist environment to survive?

How can bacteria survive on dry surfaces?
Bacteria can live in volcanoes, the air, and in your intestine. Basically, it depends on what kind of bacteria, but they can live anywhere (a lot more places than human ever could). At this moment, you have billions of bacteria on your skin and in your mouth.





While some types might die when exposed to air, others have no need for moisture. That's why a door nob or keyboard is so bacteria heavy.
Reply:yes they need wet (cold) surfaces to survive.. but they can survive on dry surface too, but maybe they have shorter life span there because its warm (heat may cause their death) and cannot reproduce as many as they can like on wet surfaces..
Reply:bacteria live anywhere they want and when they want. If the environemnt doesnt suit them they grow a nice little casing around their outer crtitter bodies and they become dormant until it's favorable again.