television is an audio-visual device of communication.it is one of the modren froms of communicaton as gift of science and technology.it is more effective than any other devices of communication due to it's visual aspect.people belive in what they see rather than only listen or here.people of every kind enjoy wahching television.it has been a cheap means of enjoyment for all cross the word.through documentaries and national geographises,the viewers can leam different types of knowledge and information about something.basically,current events and extra-ordinary things make the programmes interesting.
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