Which system is responsible for regulating and interacting with all other systems

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.

Fredrick griffith made a scientific discovery in 1928

What will happen if two of the base pairs of the stand of the dna are switched