The bar graph below show the TV viewing habits of Koreans.

What is the part of speech of 'below'? Is 'which is' omitted before 'below'?

1 answer

The word "below" can be either an adverb or a preposition.
http://www.answers.com/below
http://www.bartleby.com/61/3/B0180300.html
http://www.m-w.com/dictionary/below
In this sentence, it's an adverb. It's telling WHERE something is.

You could rephrase the sentence to include "which is" where you indicated, but it's not necessary.

=)