tobacco lungs vs weed lungs Effects of cannabis smoking on the respiratory system: A state-of-the-art review CT Chest Findings in Marijuana

There remains considerable uncertainty about both the identity of these toxicants and the extent of smoke toxicant reductions needed to decrease individual smokers relative risks of smoking-related diseases

For example, if you typically smoke during work breaks, replacing this with a short walk or stretching routine can provide similar stress relief while breaking the smoking association

It will not, however, cover you if you started the fire on purpose

(MORE: McConnell, a tobacco-state Republican, unveils bill to raise age to buy tobacco) A bill to raise the legal age to buy tobacco -- from 18 to 21 -- was introduced earlier this year by Senate Majority Leader Mitch McConnell and Virginia Sen

The scale runs from 0-14 (0 is most acidic, 14 is most alkaline and 7 is neutral), and it is logarithmic, not linear

So answer the questions on the quiz handed out by your instructor