Which component of a virus is injected into an infected cell?
tail section
nucleic acid
protein capsid
mitochondrion
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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.

What advantages does a pedigree have over a written passage?

How and why organisms are hierarchically classifies