Answer:
One shark can wear out and replenish thousands of teeth and it can do this during its lifetime
Explanation:
 
        
                    
             
        
        
        
Answer:
Explanation: When you use different words in different tenses, it makes you think about the time these events took place. If I said “I walked yesterday” that was in the past but if I say “I’m walking” you know that’s present tense 
 
        
                    
             
        
        
        
An art song is usually for solo voice and is accompanied by solo piano. (Just as a side note, I recommend listening to the Erlking by Schubert if you have time; it's a German art song (lied))