¿Qué función cumplen el cráneo y la columna vertebral?

In which process is oxygen absorbed by an organism asap apex

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.

Where can a dna be found in a prokaryotic cell