Answer:
The answer is A they can act as agents of natural selection. Hope this helps.
 
        
             
        
        
        
Significant figures<span> tell us how to round, but they also make sure that the answer we get from a math problem is not more precise than the numbers that we started with. </span>
        
             
        
        
        
Answer:
Energy 
Explanation:
carbohydrates in the food that we eat are digested and broken down into glucose before entering the bloodstream
 
        
             
        
        
        
It is Protozoa because it is not logical for it be any of the other. Hope this helped.