Final answer:
All pharmacists have a specialty in chemistry and biology, which is fundamental to advising on and dispensing medications, and contributes to healthcare.
Step-by-step explanation:
A specialty that nearly all pharmacists have is a deep understanding of chemistry and biology. This knowledge is crucial for them to comprehend the effects that drugs have on the human body. As part of their career focus, pharmacists advise physicians on drug selection, dosage, interactions, and side effects. They also guide patients on how to properly use their medications, ensuring safe and effective treatment outcomes. Whether in drugstores or hospitals, pharmacists employ their scientific expertise to contribute significantly to healthcare.