The diagram shows hydrogen bonds between water molecules. Label the diagram to show how hydrogen bonds form. A label may be used once, twice, or not at all.

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.