Answer:
weak acid
Explanation:
4-6.9 belongs to weak acids
 
        
             
        
        
        
Answer:
Identifying the fossil is the first step. We have already identified this fossil as a clamshell. We know clam are from the sea, but if you didn't, you could conclude this from knowing where you found the fossil (likely near the beach). Discovering where it is can also lead you to a conclusion on it's arrival as a fossil, perhaps washed up on shore or buried by an animal.
Explanation:
 
        
                    
             
        
        
        
For much of the last quarter century, the leading theory of the driving force behind tectonic plate motions envisaged large scale convection currents in the upper mantle, which can be transmitted through the asthenosphere. So letter C. is the Answer.
 
        
             
        
        
        
They come from crementation which is when  disolved minerals are deposited in tiny spaces...
 
        
             
        
        
        
Answer:
Nonrenewable resources are never replaced.
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