Answer:
A. coronary disease
Explanation:
Cancer that forms in tissues of the lung, usually in the cells lining air passages.
The respiratory system can be damaged from smoke inhalation and tar buildup from the chemicals used in tobacco, which can also harm the heart and blood vessels. Two conditions that can be caused from smoking are Heart Disease and Lung Cancer.
He must find his average heart rate zone
Answer:
its the measure of your body's ability to take oxygen from the atmosphere and use it to produce energy for your muscle cells.
Explanation:
