Answer:
The presence of a few PLATES
 
        
             
        
        
        
Answer:
A device to measure the dimensions of a object
Explanation:
 
        
             
        
        
        
If proven to be true, a hypothesis can become a theory, a theorem, or a law. Since her hypothesis is proven to be true, it is no longer a hypothesis.
        
             
        
        
        
Answer:
D 
Explanation:
it has to be D because its talking about "how does a volcanic ash affect water systems"
 
        
             
        
        
        
Explanation:
The non living things in its environment is called a " matrix," 
A matrix is what supports a non living thing to reproduce, triple its existence & reproduce in mass quantities, like soil bacteria, and others..