The correct option is A.
The serosa refers to the outermost layer of loose connective tissues which is often covered by mucus and which contains blood vessels. In the gastrol intestinal tract, the serosa refers to the outermost layer of the wall of the GI tract. One major function of serosa is to reduce friction from muscle movement. 
        
             
        
        
        
Answer:
Chlamydomonas containsingle-cell green alga to carry the procces of photosntesis 
Explanation:
 
        
             
        
        
        
Answer:
Light energy to chemical energy
Explanation:
The plant uses the energy from the sun to create chemical energy (food) for it to use.
 
        
                    
             
        
        
        
D fossil fuels are non renewable 
 
        
                    
             
        
        
        
Filtered blood leaves the kidney through the renal vein and flows back to the heart. Pee leaves the kidneys and travels through the ureters to the bladder. The bladder expands as it fills.