By tar, I think you mean nicotine. (I Hope). It affects the nerve signals that regulate breathing.
I think b.only select generation are effective...
Answer:
it's contagious
you should stay 6 feet apart
could be fatal
Explanation:
Many different mitochondria
It causes a much more gradual decrease in hardness with position from the quenched end.The presence of alloying elements (other than carbon) does not influence on the shape of a hardenability curve.It causes a much more rapid decrease in hardness with position from the quenched end.
