In the diagram of the earths interior where does the material that forms volcanoes originate ?

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.

Apart of an ecosystem that can restrict the growth of a population is referred to as

Describe the function of the endomembrane system? what organelles are involved?