My best bet would be passing antibodies from mother to baby through breastmilk since the antibodies are not being produced from the baby, instead it is given by someone else which would be temporary. 
        
             
        
        
        
Answer:
B.Collecting duct 
Explanation:
Antidiuretic hormone binds to receptors on cells in the collecting ducts of the kidney and promotes reabsorption of water back into the circulation
 
        
             
        
        
        
Answer: simple inorganic molecules to sugar 
Explanation:
Through the process of photosynthesis plants use the green coloured pigment named chlorophyll present in their leaves to trap sun light (solar energy) alongside other simple inorganic molecules like atmospheric carbon dioxide and water to produce sugar molecules (usually glucose) which is later stored as starch.
 
        
                    
             
        
        
        
B: nucleus, mitochondria, cell membrane
c and d both have chloroplasts which are unique to plant cells
a is wrong because only plant cells have cell walls