The answer is C) milky way. Earth lives in the galaxy, which is apart of the milky way.
~Deceptiøn
        
                    
             
        
        
        
Answer: I can only help you with one 
4. D because you need data fro what ever your doing.
thats as much as i can help vote me the brainleirst 
 
        
             
        
        
        
competition plays a very important role in ecology and evolution. The best competitors are the ones who survive and get to pass on their genes.
 
        
             
        
        
        
Type of chocolate bar, size of it, surface it is placed on, etc
Controlled variables are anything that stay the same for both trials