Answer:
True: over time it will require more nicotine to deliver the same feelings.
Explanation:
when you get to a certain high the first time, that's the highest you'll be. you start to build a tolerance and need to intake more nicotine to get to that same feeling.
I'd say that the answer would be empathy.
Look at your R-R ratio, depending on the time segment attributed to each square you can then do the math and find time between waves, then find the number of R waves in minute
