What is a chronic autoimmune disease where the body produces antibodies that stick to the body's own cells causing the body to attack itself?

What are charcteristics of lithosphere?

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.

Coral have a symbiotic relationship with what in order to eat?