Answer:
The tendency of the bird or the inclination to sing is innate in birds, however, the song, which is sung is learned. There exists an innate tendency to sing a song whether the bird is in seclusion or not. The birds possess sensitive/critical periods when they can produce memories of the songs they learn. The anterior forebrain pathway or the anterior vocal pathway is the template for learning a song by the bird. 
 
        
             
        
        
        
Answer:
They help shore up bones and heal wounds 
 
        
             
        
        
        
Answer: the answer is A(Primary Waves)
Explanation:
p waves stand for primary waves. early seismologists called them that because the waves were the first to arrive at seismometers from some distant quake
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