I think you got it right 
But I’m but sure
        
                    
             
        
        
        
Answer:
Birds are adapted by changing their beaks.
 
        
                    
             
        
        
        
Answer:
C: a coastal region with three ecosystems, each of which supports many different species
Explanation:
Biodiversity means the variety of life in the world or in a particular habitat or ecosystem. So, a costal region with three ecosystem and each has many species would be a biodiversity.  
 
        
             
        
        
        
A hypothesis can become A. a scientific theory if it is supported by repeated experimentation.