Cholera is caused by the bacterium, Vibrio cholerae and produces CTX (cholera toxin, choleragen)...
        
             
        
        
        
A,B,A
Explanation:
Just took test,
Table
Compare the mass of samples B, D, and E to see if temperature affects the rate of weathering.
Was there a measureable difference among the three treatments? 
✔ yes
Which treatment demonstrated the fastest rate of weathering? 
✔ warm vinegar
What seems to be the trend demonstrated by the data? As temperature increases, the rate of weathering will 
✔ increase
.
 
        
             
        
        
        
A) single loop
Fish have a two-chambered heart in which a single-loop circulatory pattern takes blood from the heart to the gills and then to the body.
        
                    
             
        
        
        
I believe the correct answer is all of the above.