Performance-enhancing drugs are substances that are used to improve any form of activity and sport performance.
Most physical effects of performance-enhancing drugs are reversible, with the exception: Damage to the myocardium, which is not reversible. Performance-enhancing drugs may have an effect on the cardiovascular system by directly altering the myocardium.Correct answer: B
All of the above ; stimulants can cause all of those
Answers D
Mucous is used to protect and heal and also help expel harmful bacteria from the body.
Answer:
the first answer is correct, but you could also say "all of the above"
