Answer:
subtitution mutation
Explanation:
The T in the middle is subtituted with C.
Hope it helps. 
 
        
                    
             
        
        
        
Claro que yo no sabo como Hacer eso
        
             
        
        
        
Answer:
Use 400 x in order to study the structure clearly.
Explanation:
Cell structures could be clearly identified when magnify the microscope about 400 x by using a compound microscope. Due to high magnification power of compound microscope, the individual is able to see different structures that are present in cells. while by using lower magnification, the individual is unable to see different structures clearly. So use high magnification in order to study the cell.
 
        
             
        
        
        
Answer:
Saliva contains the enzyme amylase, also called ptyalin, which is capable of breaking down starch into simpler sugars such as maltose and dextrin that can be further broken down in the small intestine. About 30% of starch digestion takes place in the mouth cavity.