Ethanol is a fuel produced by fermenting crops
        
                    
             
        
        
        
Answer: natural selection
 
        
             
        
        
        
Answer:
In artificial selection, humans have the capacity to influence certain characteristics of organisms by selective breeding. One can choose desired parental traits determined by genes, which are then passed on to offspring.
Dog breeding is another prime example of artificial selection. Although all dogs are descendants of the wolf, the use of artificial selection has allowed humans to drastically alter the appearance of dogs.
Explanation:
 
        
             
        
        
        
Answer:
hereditary variat on selection is made of those genetic variats that well be passed on most effectively to the following generation