They use sequencing technology
        
                    
             
        
        
        
Answer:
Igneous=B
Sedimentary=C
Metamorphic=A
 
Weathering is when=B
If sedimentary rock.....=C
 
        
             
        
        
        
The answer is true. I know this because it almost happened to me.
        
                    
             
        
        
        
A polyatomic ion. 
Examples: Sulfate, Sulfite, Nitrate, Nitrite...