Sam had to mix C. equal parts of the two chemicals for the experiment.
The other options just sound wrong. You need to use an adjective here, and B, D, and F aren't adjectives. A doesn't fit either.
Answer:
hows that work? sorry I dont now
Answer:
A. Mucus secretions that block airways
B. Inflamed airways that obstruct airflow
E. Overinflated alveoli that impair gas exchange
Explanation:
Chronic obstructive pulmonary disease (COPD) is considered a very dangerous illness, affecting over thirty two million people in the United States. It has a high mortality rate and is considered the third leading cause of death in the United States. Patients suffering from COPD usually have symptoms of damaged alveoli which impairs exchange of gas, chronic bronchitis or severe mucus secretion which blocks airways and asthma or inflamed airways obstructing the flow of air.
