Cerebral cortex is an outer thin layer grey matter that covers the outermost portion of the cerebrum ( the largest part present in the most superior region of the brain).
Cerebral cortex is considered as the highest level of the brain that possesses approximately 20 billion neurons. It is responsible for carrying highest level of mental functioning.
Functions associated with cerebral cortex are-
Determination of Intelligence and personality, motor activities, processing of sensory information, processing of language, sensation of touch etc.
Evolution is how we came to be as human beings ranging from rats, apes etc. This has helped us increase our survival skills and communication (ever since the beginning)