The most appropriate answer is D !!
        
             
        
        
        
Answer:
it is important for the skills to have hole thought the bone because it is used to relieve pressure on the brain when fluid, such as blood builds up and starts to compress bone tissues
 
        
             
        
        
        
The answer is C DNA and that is the answer
        
             
        
        
        
Answer:
Destruction of habitats, Introduction of non-native species, pollutions, and the over harvesting of species.