Yes and no but they will also stop water from running through the pipe all together if left unchecked and also destroy the pipe.
Use soldering to permanently connect electrical contacts, and also to permanently join copper water pipes without leaks (if you do it right!!)
may be due to many reasons like: 1. Debris and mineral buildup in pipes 2. Corrosion buildup inside piping 3. Plumbing leaks 4. Municipal water supply malfunctions
You should not have air in your pipes. Call a plumber.
Secure the pipes. Use spray foam on the pipes, drain lines so no holes or leaks .
Gamma (y)
There are several commercial products available that you can run in a hot tub to get rid of the buildup in the pipes.
Cold for the calcium carbonate is disolved by hot water.
Usually dissolved calcium is the cause of scaling in pipes that carry water.
Yes, it means you need a plumber!!!
Sure there is. Epoxy coating the inside of the pipes is what you are talking about. A liquid epoxy is put in the pipes, blown throughout the pipes, and cured in place to seal pin-hole leaks. It is a good technology that has been around for 25 years. It allows pipe repair without breaking concrete, but is a fairly expensive technology.
Yes they can. Tree roots, as they grow and spread, will "burrow" through pipes that are in their growth, path .. I have personally seen roots inside pipes.
Too much calcium?.the most important problem is that calcium buids up in pipes,dependent on heat and filtration system.Howerver this can be maintained to limit damage