the answer choices were supposed to be 
groundwater pollution
  
methane explosions
  
their unsightliness
  
foul odors
 
        
                    
             
        
        
        
 Temperature, Nutrients, dissolved oxygen and the pH. A high pH and temp increase the size of plankton 
        
             
        
        
        
I think the third statement is correct. RNA consist of ribose sugar while DNA consist deoxyribose sugar. and the nitrogenous base that is different would be the thymine in DNA becomes a uracil in the RNA
        
             
        
        
        
Answer:
The dorsolateral dermal plicae of the leopard frog are two pale, thickened bands of the dorsal skin extending posteriorly from each eye to the urostyle prominence While they are normally found in all areas of trunk skin, the largest ones are in the plicae
Explanation: