Answer: By breathing out
Explanation: Breathing in oxygen and breathing out CO2.
(Cows also release CO2 by farting)
Hope this helped!
Mark Brainliest if you want! 
 
        
             
        
        
        
To prevent the legislative branch from becoming too powerful.
        
                    
             
        
        
        
<span>"Restriction enzymes would be used to cut the DNA into smaller pieces." is the statements best describes the first thing researchers need to manipulate dna. Before manipulation it is needed to isolate the desired DNA segment. Restriction enzyme can be also called as restriction endonuclease.</span>