Cells need a source of energy, they get this energy by breaking down food molecules to release, the stored chemical energy.
        
                    
             
        
        
        
Explanation:
it's pretty much a community of any living organism that live and interact with eachother depending on a specific environment 
 
        
             
        
        
        
Answer:
the last answer 
Explanation:
because f,g,h both come from a so you can be sure