the role of organik material is idont know
 
        
             
        
        
        
B. Is characterized by four different zones.
 
        
             
        
        
        
Answer:
b, 8-10
Explanation:
your body needs 20 amino acids to grow, repair and function, however, only nine amino acids are 'essential' as such. 
they are histidine, valine, isoleucine, methionine, phenylalanine, threonine, tryptophan, leucine, and lysine
hope this helps! :)
 
        
                    
             
        
        
        
Answer:
crude oil (petroleum) is the only natural liquid fossil fuel
 
        
             
        
        
        
Similarity: both burnings lead to energy production and both result in CO2 emission.
difference: food is burned in the process called cellular respiration. this process consists of a few certain stages preventing our body from heat shock.