That varies a lot.
Various 'purposes' may be mixed.
They serve the same purpose as T.V or movies. They are a form of entertainment.
Entertainment
What purpose does silicone serve in conditioners
The Pentateuch, or the first five books in the Old Testament serve the same purpose as do all the books in the Bible. They point to Jesus Christ through types, events which are reflected in Jesus's life and purpose, and through prophesy.
Serve as preservatives.
The purpose is the toilet.
The purpose the pushpins serve in this investigation is ti act as Focal Length.
the purpose is to show our freedom
Sky Anytime is part of a television subscription package. It enables high quality streaming and viewing of movies and programming on demand competitively with other such carriers.
It deosnt, as such, serve a purpose, it is there to stop it being stolen by Voldemort basically :)
Magazines serve a purpose to inform and entertain. They are also a place where businesses can advertise and gain customers.
The purpose of the military is to serve and protect our country. They also serve so you or your family members don't get drafted!