electricity, chemistry, and astronomy
 
        
                    
             
        
        
        
Answer: 
Nervous: carries messages
muscular: moves the body
epithelium: found in cartilage
connective: found in cartilage 
Explanation:
 
        
                    
             
        
        
        
Answer: Point mutation is easily reversible, thus non-lethal 
Explanation:
Point mutation is caused by exchange of a single nucleotide for another. These change is called
1) Transition (when a purine base substitute another purine base, or pyrimidine bases substitute each other)
2) Transversion (when a purine base substitute a pyrimidine base). 
However, note that a point mutation can be easily reversed by another point mutation; so, the claim that a nucleotide difference in the Hsr12 gene caused the human disease is inaccurate 
 
        
             
        
        
        
Answer:
Carbohydrates’ bad reputation ignores the benefits they can offer
sooo i would say it is B. i think....
 
        
             
        
        
        
Answer:
Commensalism
Explanation:
Commensalism is when one organism is helped while the other is neutral (neither hurt nor helped).  Example: clownfish and anemone.