Answer:
The answer to your question is A- calories.
Answer:
Pulmonary fibrosis
Explanation:
Pulmonary fibrosis occurs when lung tissue becomes damaged and scarred. This thickened, stiff tissue makes it more difficult for your lungs to work properly. As pulmonary fibrosis worsens, you become progressively more short of breath
It is fibers. The bundles of fibers are surrounded by a tissue inside the cell.
Hope I helped
When the arteries harden!
