The drug is most likely going to be tobacco, it is well known that if you smoke one of the side effects is respiratory issues
Aerobic exercise can lead to an increase in flexibility
Hepatitis is the inflammation of the liver
Answer:
cardiovascular endurance
Explanation: i think cardiovascular endurance is most important because it helps improve many risk factors for heart disease. it lowers blood pressure, maintains weight loss, and makes the heart stronger and more efficient so it can deliver more blood to the muscles.
By he NIH trying a new drug to help reduce pain associated with sickle-cell anemia, it's an example of an "experiment".
An experiment involves a hypothesis (an educated guess as to what's going to happen) and trying out the hypothesis and finding the solution.
