Answer:
b 
Explanation:
it is a 4 on the scale, I assume that's what you meant by the numbers.
 
        
                    
             
        
        
        
Mortality, or death rate is a measure of the number of deaths in a particular population, scaled to the size of that population, per unit of the time. In this case a factor that would result to an increased mortality rate in a population due to increased competition of water will be the density-dependent factor. 
        
             
        
        
        
Answer:
fungi reproduce very quickly, so there is always new growth that needs addressing.
Explanation: I hope this helps
 
        
             
        
        
        
Answer is A. (commensalism)
assuming there is no benefit to the pitcher plant from the mosquito larvae, 
commensalism means one species benefits while the other derives neither benefit nor harm