The answer is 9 because to find the amount of neutrons you have to take away the atomic number from the mass
        
             
        
        
        
Biotic factors are anything in a ecosystem that is living, was living, or is going to live.
From this we can conclude that the biotic factors are remains of dead organisms and flora and fauna. 
Temperature and minerals in the soil are abiotic, meaning they will never live.
        
                    
             
        
        
        
Answer:
The answer is A. 
Explanation:
Phylogenetic trees are only concerned with hard data (time points of when species evolve) and not soft data like how great a species is. 
 
        
             
        
        
        
The process of photosynthesis.