(I) Sponge is a very soft substance full of tiny holes and can therefore absorb a lot of water. (II) The humble sponge sometimes called nature's washcloth, has proven to be extremely useful to humans throughout history. (III) The ancient Greeks used sponge for scrubbing their floors and furniture and for padding their armour. (IV)The Romans found it useful as mops and paint brushes. (V)Today, sponge has a wide range of uses, among which are washing cars, cleaning houses and applying shoe polish.