Which discovery supported the endosymbiotic theory?

Organisms within a population must compete for resources to survive

Which of the following is not a product of the second stage of glycosis

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.