Answer:
because existing cells divide to produce new cells 
 
        
             
        
        
        
Answer: c is the answer
Explanation: it the answer because spud waves travel without the air u hear it
 
        
                    
             
        
        
        
Answer: Specie
Explanation:
The basic unit of classification of living things is species. species is the smallest unit containing members which have the largest number of features in common and usually interbreed among themselves. 
Thus, the group of deer describes a specie since they can interbreed freely and are similar in characteristic features.