Describe how the body systems of this boy function during and after the time he eats his lunch . Use at least four different body systems in your answer .

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.

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment

What do transitional fossils best support?