Final answer:
After a problem and its symptoms have been identified, a theory regarding a probable cause should be established. When a theory has been known for a long time, it becomes a law: False.
Step-by-step explanation:
After a problem and its symptoms have been identified, a theory regarding a probable cause should be established.
When a theory has been known for a long time, it becomes a law: False.
Medical professionals rely on analysis of signs and symptoms to determine the cause of a disease, but it is often necessary to confirm the identity of the infectious agent by other diagnostic methods.