Answer:
when refering to growth the cells get bigger rather than multiplying, when talking about development, the cells multiply rather than enlarge 
Explanation:
 
        
                    
             
        
        
        
A multicellular organism develops from a single cell.
        
             
        
        
        
the population goes down 
Explanation:
Large algal beds die, depriving marine iguanas, turtles and many fish of their staple diet. Once weakened, strong swells and sea urchins break apart complex coral habitats that sustain diverse species changing the environment.