The answer is C to move proteins and other substances through the cell
 
        
                    
             
        
        
        
A good reason for why tobacco smoke is considered a carcinogen is because it causes mutations leading to cancer. 
        
             
        
        
        
They can conclude that the epicenter is the same distance from both recording stations.
        
                    
             
        
        
        
The answer is D! birds have to migrate for winter to find an abundance of food! they learned this over time making it a learned adaptation