Nicotine enters the blood when a person smokes cigarettes.
Answer:
I think c. I'm sorry if it's not right
Increasing vida in d leves within the body you need the vitamin
The atmosphere is made out of 78% of nitrogen and 21% of oxygen with 1% of other gases (Carbon dioxide, Argon,and Helium)
Rather than stopping completely, Luis should lower the speed of the treadmill, making the aerobic lower, and let his heart rate gradually enter his target range. Stopping completely will interrupt the workout and could negatively impact his muscles and joints, and slowing down the treadmill will allow his body to gradually settle into a new aerobic intensity that's closer to his target.
