If you smoke for a long time what builds up in your lungs and make them look black?

Question

9letters0 words

Answer 1

its tar

Answer 2

tar

Answer 3

its tar from the cigarette and eventually it builds up and u get lung cancer

Answer 4

carbon particles

Answer 5

soot!

Answer 6

Tar.  I am not sure that tar is the primary cause of lung cancer, I believe it is other constituents that are the major causes, although having all those polycyclic aromatic hydrocarbons, many of which are known carcinogens, inside your lungs for the long term is probably a source of increased risk.  

But tar does cause emphysema and other lung ailments-coats all the little hairs and the surface cells where air exchanges with blood, considerably decreasing how well the lungs work.

if you smoke, you have certainly coughed up dark phlem from time to time.  The tar is a primary reason people get "smoker's cough".  Trying to clear their lungs of the goop in there.

Answer 7

nicotine or monoxide