I got kicked out of my old account

The series of transgressions and regressions that produce cyclothems were likely produced by

Are salt and soap nutrients or toxins for yeast? explain.

Most of the fossils found in virginia are in the coastal plain, valley, ridge, and appalachian plateau regions, best suggesting that these geographic provinces a) were once covered by seawater. b) are the oldest parts of virginia. c) have a great deal of karst topography. d) have large amounts of sedimentary rock.