Answer;-The above statement is true.
A scientific theory must be supported with empirical evidence.
Explanation;-A scientific theory is a specific type of theory used in the scientific method.-Every scientific theory starts as a hypothesis. A scientific hypothesis is a suggested solution for an unexplained occurrence that doesn't fit into a currently accepted scientific theory. -A hypothesis is an idea that hasn't been proven yet. If enough evidence accumulates to support a hypothesis, it moves to the next step; known as a theory, in the scientific method and becomes accepted as a valid explanation of a phenomenon.
When values are in opposition with behaviors, a common reaction is that people consistently change their behavior.
Explanation:
This change in behavior is often associated with goal setting. Goal setting often change a person to change his/her behavior to change specifically to reach his/her goals.
Goal setting triggers behavioral change which might oppose the true values of an individual. Behavioral changes turn to be positive in case of achieving goals in ill-health habits like smoking, drinking alcohol, or addiction to illicit drugs.

B.Mood-altering chemicals derived from plants.
please correct my answer if its wrong