Where do most drugs enter the bloodstream

- By injection (Heroin and needles) 
- By smoking (Tobacco and smoke) 

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

The answer would be d. most contraceptives are effective when used properly