Answer:
D. Small population size
Explanation:
Hardy-Weinberg equilibrium requires the presence of a large randomly mating population. Small population size makes the population more likely to deviate from the Hardy-Weinberg equilibrium due to sampling error or chance events occurring during the genetic drift. Large population size ensures that the population maintains the constant allele frequencies over generations, that is the Hardy-Weinberg equilibrium.
 
        
             
        
        
        
the answer is the trophic level  
 
        
             
        
        
        
A-The composition of their cell walls
Explanation: plant cell walls components is glucose. Fungi cell will components is chitin
        
             
        
        
        
Need more info make sure to add the pictures or at least explain it better