Answer:
B) venous blood and aveolar 
Explanation:
Partial pressure of carbon dioxide in the aveolar is the lowest, it is 40mmHg (millimetre mecury ) while the partial of carbon dioxide in venous blood is the highest at 45 to 50 mmHg (millimetre mecury) 
 
        
             
        
        
        
Plants are called producers. They produce their own food using sunlight, and they convert it into sugar-like substances. :3
        
             
        
        
        
Assuming the white phenotype is recessive. white: gg 
I think the gray mouse is Gg because the offspring were pretty equally distributed in terms of color. See the punnet square below. 
 g g
G| Gg Gg
g| gg gg
If the Gray phenotype is recessive, then gray: ww but only if white is Ww because its about 50% chance for both. 
        
             
        
        
        
Abiotic is non living things. So I would think it would be D. All of the above