Answer:  A.) Thin                    
 
Explanation:  According to the graph, on day 20 there are more aliens in the thin form than in either of the other two forms. So the form with the highest probability is the thin form.
Hope this helps : )
 
        
             
        
        
        
Answer:
I would say a process of energy conversion that releases energy from food in the presence of oxygen, forming new compounds. 
Explanation:
Why? Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds
 
        
                    
             
        
        
        
ec·o·sys·temDictionary result for ecosystem
/ˈēkōˌsistəm/Submit
nounECOLOGY
a biological community of interacting organisms and their physical environment.
(in general use) a complex network or interconnected system.