Answer:
exhaling
Explanation:
when inhaling oxygen is taken in and exhaling carbon dioxide is taken out
 
        
                    
             
        
        
        
The answer would be 3...mass!
        
             
        
        
        
Its C. Whenever you perform an experiment you want to make sure its as controled as it can possibly be.
        
                    
             
        
        
        
Answer:
Gene Therapy
Explanation:
The introduction is through the DNA encapsulated in a virus it is gene therapy—Not pharmacogenetics. Genesplicing are usually use his mRNA. 
 
        
             
        
        
        
Long eyelashes that doesnt allow the sand to get into its eyes 
And its ability to store water for long periods of time in its hump