Hello  <span>Elliendc913 
The injury probably was a result of contact. This happens a lot in sports. The probability is pretty high but it also depends on if you play safe.
Hope That helps
-Chris</span>
        
             
        
        
        
Answer:A selectively permeable cell membrane is one that allows certain molecules or ions to pass through it with active or passive transport. 
Explanation:
 
        
             
        
        
        
It helps them stay safe from predators
        
                    
             
        
        
        
Answer:
ADP is combined with a phosphate to form ATP in tADP+Pi+free energy→ATP+H2O
Explanation:
The energy released from the hydrolysis of ATP into ADP is used to perform cellular work, usually by coupling the exergonic reaction of ATP hydrolysis with endergonic reactions.