What do biologists use to establish whether or not two organisms are the same kingdom

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 transport tubes for food coming down the plants are called?

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots