Because this is the principle of an object-oriented programming(OOPs).
Generally, there are the four basic concepts or principles of the OOPs.
First is Encapsulation.
Second is Abstraction.
Third is Inheritance.
Fourth is Polymorphism.
OOPs is the type of writing the programs by using their ideas and by following the concepts or the principles of the object-oriented program of objects for representing the methods, data members and the member functions.
Never add tap water to your battery. ... Battery electrolyte levels should be just below the bottom of the vent well, about ½ - ¾ inch above the tops of the separators. Never let the electrolyte level to drop below the top of the plates.
