Without copying and pasting answer!
what are the duties of a plumber, and why is it difficult?

A plumber's duty is to install, repair, and maintain pipes, and fixtures in commercial and residential structures.

It is difficult because it is sometimes very dangerous and you have to work in extreme and critical conditions. And most of the time you inhale dangerous chemicals. Plumbers are dealing with anxious situations such as water pouring through ceilings, gas leaks, and pipes bursting in subzero temperatures.

Explanation:

hope this helps :))

eds? ederal government or feds