Answer:
lol that's a hard question idk
 
        
                    
             
        
        
        
What’s the question!!!!!!!!!!!!!!
        
             
        
        
        
That field is called taxonomy (biology)
        
             
        
        
        
The answer is Mitochondria
        
             
        
        
        
The hemoglobin that is about 65% saturated with o2 in a healthy resting person Systemic veins & pulmonary arteries. 
<h3>Define Hemoglobin?</h3>
Hemoglobin is a protein in red blood cells that takes oxygen to body's organs and tissues and elates carbon dioxide from organs and tissues back to your lungs. 
Thus, Systemic veins & pulmonary arteries are correct.
To learn more about hemoglobin click here:
brainly.com/question/15011428
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