Answer:
mitosis, gene expression, differentiation
Explanation:
 
        
             
        
        
        
Explanation: Rivalry
There is safety in numbers, and with that, they can run together more often without the fear of being attacked, and must push themselves to match others, therefor getting fit
 
        
             
        
        
        
The control group is the part of an experiment that does not receive the variable and is used for comparison.
        
             
        
        
        
Answer:herbivore 
Explanation: herbivores don’t eat meat and they are prey so the deer is also low on the food chain.