Hémoglobin =other name for blood
        
                    
             
        
        
        
Answer: I believe the answer is D because I know that you can't kill a eagle in the U.S. because it is a protected species. 
 
        
             
        
        
        
Answer:
It is believed that insects are so successful because they have a protective shell or exoskeleton, they are small, and they can fly. Their small size and ability to fly permits escape from enemies and dispersal to new environments. ... In addition, insects can produce large numbers of offspring relatively quickly.