Dissociation is quite common and presents in various forms of temporary distraction or separation. when the separation becomes sufficiently severe as to disrupt consciousness, memory, or identity, the condition is then known as
a. conversion disorder
b. dissociative disorder
c. dysfunctional amnesia
d. psychogenic disruption

b. dissociative disorder

Explanation:

A dissociative disorder is associated with the conditions that involve the breakdown or disruption of the memory. In this disorder the sense of awareness, identity and perception are lost. The person looses consciousness. The patients suffering from dissociative disorder use separation or dissociation as a defense mechanism to deal with the condition.

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.

some scientists like gregory adcock agree with thorne's theory of regional continuity.

others, like chris stringer and ian tattersall, believe thorne's results may be contaminated or misinterpreted.