English is the national language of the United States.
        
                    
             
        
        
        
Answer:
nucleolus
Explanation:
The nucleus contains the cell 's DNA and directs the synthesis of ribosomes and proteins. Found within the nucleoplasm, the nucleolus is a condensed region of chromatin where ribosome synthesis occurs.
 
        
             
        
        
        
Answer: Portrayal of thermal convection as a mechanism.
if its not right im srry :( 
but if it is your welcome :D
 
        
             
        
        
        
Answer:
An acid increases the hydrogen ion concentration in a solution, while a base decreases the hydrogen ion concentration. pH is used to measure the concentration of H+ ions ([H+]) and therefore, whether a substance is acidic or basic (alkaline).
Explanation:
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