Select the correct answer from each drop down menu. among these figures figure and blank have the same volume. 1 a c e 2 b d

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

Which of the following areas has the highest population density?

Witch of the following volcano hazards is made up of rocky particles about the size of a grain of sand