What does opec mean and why was it formed?

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 are the 28 countries in the eu?

Which area is it likely to find the most population in an urban areaa rural area a suburban area