Which best describes the purpose of bar graphs?

The difference(s) between the grand canyon and valles marineris is/are: (a) the grand canyon was formed by water, but valles marineris was not. (a) valles marineris is much longer than the grand canyon. (c) valles marineris is much wider than the grand canyon. (d) valles marineris has large volcanoes near it. all of the above

What is the mercury length of time for one revolution around the sun?

Are divergent boundaries responsible for tsunamis?