An acetyl group is <span>a functional group that links two monosaccharides in a disaccharide.
It joins the monosaccharide by glycosidic linkages. It is a type of covalent bond and form by the condensation reaction of amine and alcohol.</span>
        
             
        
        
        
Answer:
I think its D sorry if you get it wrong 
 
        
                    
             
        
        
        
Answer:
First is heat waves, second is drought and lastly is monsoons 
Explanation:
Hope this helps!!
 
        
             
        
        
        
Value of pi = 3.14
Radius of the semicircle = 6 cm
Diameter of the semicircle = 6 * 2 cm
                                           = 12 cm
Perimeter of a semicircle = pi * Diameter *(1/2)
                                         = 3.14 * 12 * 1/2
                                         = 3.14 * 6
                                         = 18.84 cm
From the above deduction, we can conclude that the perimeter of the semicircle in question is 18.84 cm. I hope that this is the answer that has come to your desired help.