It is probably the type of environment they live in
        
             
        
        
        
Hello!
The answer to your question, "the idea that rocks form over a long period through the slow geologic processes is called ___", would be gradualism. 
Hope this helps, and have a great day! :)
        
             
        
        
        
Answer:
limestone, carbonate rock, salt beds, or rocks that can naturally be dissolved by groundwater circulating through them.
Explanation:
 
        
             
        
        
        
Answer:
organisms that eat chipmunks, like big birds or something, would decrease because their food source has decreased. Organism that are eaten by chipmunks, like grass, will increase because they aren't being eaten as much anymore. organisms that eat the same foods as chipmunks will increase because they have less competition for food now.