How many different offspring genotypes are possible from a cross between parents with genotypes rr and rr?

Could someone me with number one you

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.

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.