assuming this is plate tectonics: At divergent boundaries where the plates pull apart, magma from the earth's mantle fills in the spaces created.
 
        
                    
             
        
        
        
The plant growing up a brick wall would be both exhibiting and gravitropism, hope this helps
 
        
             
        
        
        
There are three domains, and six kingdoms.
        
             
        
        
        
I believe the answer is A
        
             
        
        
        
a. phosphate group, sugar, nitrogen base.
b. if it is DNA- deoxyribose sugar and if it is RNA- ribose sugar
c.Nitrogen base
d. Adenine, Gaunine, cytosine, Thymine.