The correct answer is any substance or environmental factor other than a steroid
The independent variable is the factor or behavior that is manipulated by the experimenter in order to observe the effect of that manipulation on another factor or behavior that is the dependent variable. To you It is also called the experimental or active variable.
Hilda's case is a classic example of dissociative identity disorder (multiple personality disorder). Individual with disorder of identity has two or more identities, two or more personality states, which alternately take control of him. This disorder also includes memory gaps, which can not be explained in limits of "normal" oblivion.
Answer is a
protection from costs of unplanned events
Before the 4th century BC, Macedonia was a small kingdom outside of the area dominated by the great city-states of Athens, Sparta and Thebes
They became a global economic power.