Everywhere there is a network of pipes and cisterns, be it home or any factory. In real life also pipes etc are used at all places. These days the manual work has disappeared & the mechanical and automated stuff have occupied things. No on…

Everything needs maintenance because nothing is right on this earth. If you take the example of the human body then it changes with time. Like it has to be fed and filled with many other things. On the other hand, there are nonways things …