Answer:
Their parents are smokers.
Peer pressure—their friends encourage them to try cigarettes and to keep smoking.
Explanation:
The answer is cardio respiratory endurance :)
It pumps the blood in and out of the heart. If I remember right I think that’s it.
The nose hair helps remove particles in your nose and t<span>he respiratory tract cleans, warms, and </span>moistens air<span> on its way to the lungs which then leads to the nose that's how your nose enables warm moisten air.
Hope this helps :)</span>
