The first ancestors of humans showed up about years ago.

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.

Compare the composition of the moon's surface with the composition of the earth's surface.

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone