The amount of electrons and energy levels.
I hope this helps:)
Answer:
Aorta, Pulmonary artery, left atrium, mitral valve, aortic valve, left ventricle, right atrium, tricuspid valve, and right ventricle Hopefully this helps!
Chronic bronchitis is permanent inflammation of the airways accompanied by excess mucus production. Correct answer: C
The air sacs in the lungs lose most of their ability to function, the airways are always inflamed and more mucus is created.
