Strip mining is taking away the surface, literally scraping the surface away to remove coal.
        
                    
             
        
        
        
It has not. Evolution is not a process that can happen to individual organisms; it's change that happens to a species over many generations.
        
                    
             
        
        
        
Good roots, sunlight, and a stable base
        
             
        
        
        
Answer:
I think you're talking about how they survive in the snow. That would be by hibernating.
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If you rephrase your question let me know and I can try to help you further :)
 
        
             
        
        
        
Answer:   hierarchical
I believe this is the answer
Explanation: