The answer is Glycogen, hope this helps
 
        
                    
             
        
        
        
Answer:
A
Explanation:
As the species seperated they formed a differnt beak based on what they ate.
 
        
             
        
        
        
Sediment; There is a source of heat that was not included in the question to create all the other choices.
        
                    
             
        
        
        
Explanation:
The best-known neurotransmitters responsible for such fast, but short-lived excitatory action are acetylcholine, norepinephrine, and epinephrine while GABA is the major inhibitory neurotransmitter. Neurons are the basic building blocks of the nervous system.