Six molecules of carbon dioxide plus six molecules of water plus light energy converts to six molecules of oxygen plus sugar, Thus, the correct option is A.
<h3>
What is photosynthesis?</h3>
Photosynthesis is the process through which plants use sunlight to create their own nourishment. Through a sequence of reactions, light energy from the sun is turned into chemical energy, which is then stored in the form of food.
In the presence of sunlight, 6 molecules of carbon dioxide (CO2) and 6 molecules of water (H2O) react to form 1 molecule of glucose sugar. During photosynthesis, 6 molecules of oxygen are formed in addition to glucose.
The following is a balanced chemical reaction for photosynthesis:
    
                                      Sunlight
6CO2    +              6H2O  —---------> C6H12O6 +     6O2.
(carbon                (water)                  (glucose)       (oxygen)  
dioxide)
For more information regarding photosynthesis, visit:
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Any area in a damp or closed surface.
        
             
        
        
        
Modern stromatolites – living fossils. Originating over 3 billion years ago, stromatolites are the oldest known fossils (timeline). Fossilized stromatolites were laid down as colonial structures built by photosynthesizing Cyanobacteria and other microbes.
 
        
                    
             
        
        
        
Answer:
The answer is Physical. Physical immunity occurs when a person immune system responds to antigen. 
Explanation: