There are 5 stem cells. Totipotent Stem Cell, Pluripotent Stem Cell, Multipotent Stem Cell, Oligopotent Stem Cell, and Unipotent Stem Cell.
        
             
        
        
        
The enamel. For example lemon juice can destroy your enamel it’s like another way that protects the teeth but you should also protect the enamel.
        
             
        
        
        
Answer:
 Power has to travel a long distance over power lines to reach cities. Because there is no power plants.
Explanation: 
Please tell me if I am wrong! good luck!
 
        
                    
             
        
        
        
Small bone fractures that develop in response to repetitive, cumulative trauma are known as stress fractures. These are fractures where bones are injured by overuse, they are commonly found in the spine, vertebrae, leg bones, feet, and the pelvis. They result from the accumulated trauma from repeated submaximal loading, such as running or jumping