Yes. earthworms require their skin to be moist to breathe.
Moist healthy, unpolluted soil.
earthworms are moist because gases can pass easily them as they breath through the skin
no you can cut it and they will become two.
yes earthworms do breath in dirt they do this through their skin as they have moist skin
Oxygen dissolves on the mucus of their skin and goes into their cardiovascular system. And since it goes through the mucus of their skin they have to stay moist.
Yes, but they do not need as much moisture as frogs
Most usually anywere were there is moist and rich soil. If you are looking to find earthworms, you would probably be very lucky if you searched under a object were the soil is cool and moist, and the earthworms would have a place to hide. So basically, in topsoil.
Forever, they just need to stay moist.
They breath through their skin and need to stay moist to do so.
No they have moist skin otherwise they would dry out.
Because they can't breathe if dry
Its a cold blood animal.