I think its B. probely cause i dont hvae the image
        
                    
             
        
        
        
Answer:
a nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy.
Explanation:
Hope it helps
 
        
                    
             
        
        
        
They release carbon dioxide for photosynthesis.
The producers synthesize their food through photosynthesis using energy from sunlight and carbon dioxide from the air.
Hope this helped :)
Have a great day
        
                    
             
        
        
        
I would say that the resource you could use to find the meaning of <em>ambiguous </em>is the dictionary. 
An almanac is an annual publication about weather, crops, etc.
A thesaurus is a dictionary of synonyms.
An encyclopedia is self-explanatory.