The brain is the largest, most complex portion of the nervous system, containing 100 billion multipolar neurons. What are the four major divisions of the brain?

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added

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.