Commensalism :)
in case when bacteria and human, both are benifited.
        
             
        
        
        
Answer: C). Sensory neurons, D).motor neurons
Explanation: Sensory neurons are nerve cells that carry signals from the external parts of the body such as the skin, eyes, ear, nose (the sense organs) to the brain. 
Motor neurons are nerve cells that carry information or messages away from the central nervous system ( brain and spinal cord) to the rest of the body such as the skin, muscles and glands.
 
        
             
        
        
        
The answer would be D. Huntington's disease presents symptoms in humans after many have already reproduced; therefore, they are unaware that they passed on Huntington's disease.
 
        
             
        
        
        
The answer is A. number of pots
        
             
        
        
        
Answer:
The fox is the tertiary consumer.