Amnesia is characterized by extreme memory loss that stems from extensive psychological stress.
true / false.

Answer is true.

Explanation:

Amnesia or dissociative amnesia occurs when the memory is functioning abnormally due to the effects of psychological trauma on the brain. This means that the resulting abnormal brain functioning is solely due to the psychological stress and not physiological effect.

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.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.