PATHWAY (ROUTE) TAKEN BY CO2:
blood(within capillary) >wall of capillary >wall of alveolar >moisture lining >alveolar space >bronchiole >bronchus >trachea >nose
PATHWAY (ROUTE) TAKEN BY O2:
nose >trachea >bronchus >bronchiole >alveolar space >moisture lining >wall of alveolar >wall of capillary >blood(within capillary)
        
             
        
        
        
Purines: adenine and guanine
        
             
        
        
        
Answer:
These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects.
 
        
             
        
        
        
Question 3, the answer is Zygote
Sorry that's the only one I can answer for sure right now.
        
                    
             
        
        
        
Answer:
the three domains are Eukarya Archae and Eubacteria 
Explanation:
an example of Eukarya is plants and animals 
an example of Archae is methanogens 
an example of bacteria is bacteria such as e.coli