Which Which disease makes the air sacs in the lungs less elastic, reducing their ability to absorb oxygen? best describes the effect nicotine has on the central nervous system?

It would be 23 beats per second

1. b vitamins2. vitamin k3. vitamin d4. examples are walnuts, seeds, tofu5.  total fat, saturated fat, trans fat, cholesterol, sodium, total carbohydrate, dietary fiber, sugars, protein, vitamin a, vitamin c, calcium, and iron.6. 11257. they have to contain reliable information8. less than 10%  9. i didnt read the course so im not surehope that : p