Because during digestion, blood is needed to execute the process.
Swimming also requires blood so it takes the blood that was initially being used for digestion away.
Hope it helped!
        
             
        
        
        
In the given case, no antibiotic is needed for dental procedures.  
Based on the updated recommendations from the American Heart Association, there is no need to take a precautionary antibiotic prior to dental proceedings for the majority of people.  
It has been suggested by AHA that only those who are at greatest threat of bad consequences from infective endocarditis needs to get the short-term preventive antibiotics prior to routine dental approaches.  
It has been recommended by the AHA guidelines that various of the people who have taken preventive antibiotics in the past no longer need them, these include the individuals with the conditions, like mitral valve prolapse, ventricular septal defect, bicuspid valve disease, rheumatic heart disease, and others.  
 
        
             
        
        
        
Answer:
genetic trait=eye color (a)
environmentally influenced trait=the language you speak (b).
 
        
                    
             
        
        
        
Your answer is Archea bacteria
Let me know is you got it correct