Earthworms will eat through anything in the soil and get they're energy and water from what they consume.
Yes, chlorinated water kills earthworms. The worms in question must breathe through their outer layers. The "skin" needs to be kept moist, but waterlogged, with the consequence that too much of any water -- not just chlorinated -- will kill earthworms.
I guess it depends on the worm but earthworms and such don't bite.
they drown
No
Earthworms come up to the surface during rain because the ground is saturated with water. If they stay underground, they will drown.
since crabs are water animals an earthworms are land animals they would rarely ever meet much less consume one another
Earthworms like rain so they will move up to the surface when their is rain.
earthworms travel faster
Use Salt water or spread salt around.
the hole traps the water and the plants wont drown
The bacteria in earthworms is called Eisenia Fetida it's in most earthworms