<span>The reserves will eventually be used up. </span>
        
                    
             
        
        
        
I think it is B. biome 
Because biome means a large area dominated by characteristic plants and animals, such as a rain forest, desert, or tundra.
        
                    
             
        
        
        
Answer:
what exactly do you need help with?
 
        
             
        
        
        
Answer:
A phenotype is the physical observations of anything, really. For example, lazuli bunting (a bird species) has feathers that range from dull brown to bright blue. the dull brown and bright blue birds are best at mating. adult males are aggressive toward the bluish-brown birds. The greatest frequency here is that 2 seperate colors are able to mate best, yet, the mixed birds are attacked.
Explanation:
I hope this helped, 
have a great day.