Answer: Phosphodiester bond 
Explanation:
The backbone of DNA consists of deoxyribose nucleotides linked by phosphodiester bridges. 
The 3'-hydroxyl of the adjacent sugar of one deoxyribonucleotide is joined to the 5'-hydroxyl of the adjacent sugar by an internucleotide linkage called a phosphodiester bond.
Thus, phosphodiester bond is the answer 
 
        
                    
             
        
        
        
Answer:
The correct answer is option D. cube.
Explanation:
The image represent the cells similar to the epithelial cells whcih is found in various tissues such as muscle, nervous and many more. These cells are found in cuboidal, columnar and squamous sha[es which found in normally double layer or in multiple layers.
These cells are cube like in structure with a spherical nucleus present in the center of the cell known in assocation of various cells.
 
        
                    
             
        
        
        
Answer:
magma upwelling and lateral expansion along the mid-Atlantic ridge
Explanation:
 
        
             
        
        
        
It means that they are safe, wholesome, and correctly labeled and packaged.