Answer:
Cellular specialisation is the process by which an initial undifferentiated cell, gets specialized (attains a structure and function characteristic of a given cell type). In this case, the embryonic stem cells, undergo specialisation to give the many different cells and tissues of the body. Without cellular specialisation during embryo development, we wouldnt have all these varying tissue types fine-tuned to their functions. 
 
        
             
        
        
        
Answer:
They would be 60,000 miles long. Which is enough to go around the world twice.
Explanation:
 
        
                    
             
        
        
        
Positive feedback is when you say something positive to someone. Example if someone says what do you think about my shirt? And you reply i love it! Its positive feedback. I hope this is what you here talking about
        
             
        
        
        
Patrick has to learn the correct way to jump rope for his boxing match. Since he already knew how to jump rope, learning the correct way would be called transfer. The correct answer is D.