A or D... depending on which country you are talking about and if it is a developed or developing country...
the effects of overcrowding will definitely be negative...
sorry not much help!
        
             
        
        
        
I believe the answer is A. True. 
        
                    
             
        
        
        
C, decrease.
If the trait is easy to be seen by predators, they will be caught more often than those without the trait, thus reducing the frequency of the trait.
        
             
        
        
        
Intraspecific competition
        
             
        
        
        
The process of cell division whereby the chromosomes are duplicated and distributed equally to the daughter cells is called mitosis. The cells stretch out when you get a wound and explode, that is why you have blood but then when more cells are formed it gets tightly together and closes up the wound in which then separates to make more cells.