Which of the following is a chemical barrier that is able to destroy the cell walls of certain harmful bacteria? A.
mucus membranes
B.
skin
C.
white blood cells
D.
enzymes in tears

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