What is the skeleton of an embryo mainly composed of?
       
      
                
     
    
    
    
    
    2 answers:
            
              
              
                
                
B)Cartilage is the answer
                                
             
                    
              
              
                
                
Cartilage would be your answer. 
                                
             
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Answer:
stopet please
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Answer:
The answer is A ovaries and uterus
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D. ice core samples for the arctic and anarctic
 
        
                    
             
        
        
        
A. the mitochondria and chloroplasts are much different in structure than bacteria