What does saliva begin to break down in the mouth? 1. Fiber
2. Complex carbohydrates
3. fats
4. Proteins

Explanation is in the file

cutt.ly/zxt1ipy

well when looking at this if you think about it   negativley and positivley   react with each other and when the first layer gets full they add layers it starts with 2 on the first layer and it constantly goes on until the official number is there

i think the answer would be b.