Your answer would be D) because at each increasing level of the energy pyramid, there is 10% lost as heat
        
             
        
        
        
A heterotroph is an organism that cannot produce its own food. It has to eat/ consume other organisms to sustain its self.  An omnivore is an animal that eats both plants and animals.  It is a heterotroph because it must eat to live.  Same with a carnivore, just that it only eats meat.
        
             
        
        
        
Paths of damage up to 50 miles long
        
                    
             
        
        
        
They are separated by a space called a synaps 
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Seems like Overpopulation, since they can not survive on the amount of resources available.