What ocean is off the east coast of the united states?

In what climate does shifting cultivation predominate? and, what are its two characteristics?

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

This word for a bug or malfunction was popularized in the 1962 book into orbit by the mercury astronauts