Answer:
C
Explanation:
Green Plants are the main producers of starch as carbohydrate.In order to carry out this  special organelle Chloroplast are specially adapted  for this purpose,
Green plant are made up of Chlorophyll which are the green pigments that for trapping sunlight for the synthesis of starch to occur.
Photosynthesis is the process of synthesis of the starch.It involves the reaction of C02 with water  in the presence of sunlight  and enzymes to give oxygen as the byproduct, and Starch( carbohydrate) as the main product.
This process occur in two pathways the light dependent pathways and the light independent pathways, 
Green plant and some organisms phytoplankons,algea are capable of producing starch  through photosynthesis because of the green pigment they possess.Therefore they are said to be Autothrophic.
 
        
             
        
        
        
Answer:
a. pepsin 
Explanation:
it has a 1 to 2 level which is acidic because anything lower than 7 is acidic
 
        
                    
             
        
        
        
Answer:
It's secreted into the extracellular fluids. Collects in the lymph fluid, the vascular blood fluid and eventually the excess is secreted via, urine, feces, lung respiratory exhalation gases, sweat, nasal and mouth, throat mucous and saliva, tears, etc. 
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Answer:
the answer is C
Explanation: The deep ocean circulation of water is caused by convection currents in water that allow cold water to rise and warm water to sink.