Ascientist should be willing to change his theory if the evidence does not support it.
a. trueb. false

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

Are divergent boundaries responsible for tsunamis?

During which era in earth's history were the first insects? mesozoic precambrian cenozoic paleozoic