C. The increase in average global temperatures caused by greenhouse gases
        
                    
             
        
        
        
Answer:
b.sedimentary rock
Explanation:
because when magma cools it hardens
 
        
                    
             
        
        
        
Because Precambrian rocks are in short supply, hence fossil evidence is harder to find.they only discovers sections of some Precambrian rocks there were no bones or shells to be permineralized.
        
             
        
        
        
Sounds like a multiple choice question, may I have the options?
        
             
        
        
        
Answer:
They both can be constructive forces.
Both volcano's and wind can shape the landscape... volcano's using eruptions and lava, wind using wind erosion when it gets "windy"