The correct answer is B. Addiction
It’s an addiction, most of the products if not all that involve nicotine are bad for your lungs
D. transfer is the training principle in this scenario
A routine? That’s what is seems like he’s doing. Any answer choices?
During inhalation, the lungs expand with air and oxygen diffuses across the lung's surface all of this will enter the blood stream and exhaling isbreathing it all back out
