Answer:
C. electricity generation
Explanation:
 
        
                    
             
        
        
        
 Mutation would be the best answer. 
        
             
        
        
        
Answer:
Blood taken from an artery in the leg is oxygenated while blood taken from a vein in the leg is deoxygenated. 
 
        
             
        
        
        
True. 
Overlapping food chain is a food web. A food web shows the many different paths plants and animals are connected. eg: A hawk might also eat a mouse, a squirrel, a frog or some other animal.