hey guys! can u help me! im sure its true but also i don't wanna waste my points on a simple question

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

Most countries in the middle east must import a majority of their a. gasoline b. oil c. food d. water

Acontinental polar air mass foms in