Uracil pairs with adenine in RNA base
        
             
        
        
        
Answer:
The answer D
Explanation:
The answer is in the question.
 
        
                    
             
        
        
        
Answer:
The answer is d. pyruvate
Explanation:
An oxidizing agent is the substance that gains electrons in a chemical reaction. At the end of the reaction it is reduced and its oxidation state increased.
A reducing agent is the substance that loses electrons in a chemical reaction. At the end of the reaction it is oxidized and its oxidation state decreased.
Pyruvate gains one electron, it is reduced from pyruvate to lactate; thus, pyruvate is the oxidizing agent.
NADH loses one electron, it is oxidized from NADH to NAD; thus, NADH is the reducing agent
 
        
             
        
        
        
Answer: Chemoautotrophs like algae and plankten are able to use chemosynthesis for thier food.
So <u>maybe</u> it's autotrophs since they don't eat plant's or meat.