Break down that occurs in mouth

An enzyme called amylase breaks down starches (complex carbohydrates) into sugars, which your body can more easily absorb. Saliva also contains an enzyme called lingual lipase, which breaks down fats. A condition known as dry mouth (xerostomia) occurs when you don't have enough saliva in your mouth.

Brother ur in collage do it yourself or i will tell prof. mike

Mutations are changes in the dna