disadvantages of smoking cigarettes Why ANYTHING Can Cause Lung Cancer Smoking: Pros and Cons Explained

Hemoglobin that has little oxygen bound to it loses much of its brightness, so that blood returning to the heart is more burgundy (bluish red) in color.Considering that cellular respiration continuously produces carbon dioxide, the partial pressure of carbon dioxide is lower in the blood than it is in the tissue, causing carbon dioxide to diffuse out of the tissue, cross the interstitial fluid, and enter the blood

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Eat first nicotine feels stronger on an empty stomach

No wonder tobacco can make you light-headed