I don’t know I’m guessing the flu good luck
        
                    
             
        
        
        
The exceptions to this rule are the pulmonary arteries and veins.   
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The pulmonary artery is the one that carries deoxygenated blood from the right side of the heart (ventricle) to the lungs. On the other side, pulmonary veins transfer oxygenated blood from the lungs to the heart (left atrium).</span>
        
             
        
        
        
Respiration and Photosynthesis
 
        
             
        
        
        
Answer:
Protozoa are single-celled eukaryotes
Explanation:
Eukaroytes are organisms whose cells have nuclei
 
        
                    
             
        
        
        
Answer:
its caused by the absorption of heat. hope this helps:)