Overproduction - An organism gives birth to too many children 
Genetic Variation - The offspring each have genetic differences in appearance, behavior, etc
Struggle to Survive - Offspring must fight in order to gain essential resources (food, water, mates, etc)
Successful Reproduction - Organism produces offspring with beneficial adaptations that aid in survival
 
        
             
        
        
        
I think its c. igneous rock
        
                    
             
        
        
        
Metals are strong, high density, good conductors of heat and electricity, and are also malleable and ductile. While non metals are brittle, dull looking, are poor conductors of heat and electricity, and are overall weaker.
        
             
        
        
        
HIV? It destroys the immune cells called CD4 T cells.