Explanation:
The structure labeled as x is the 
<h3><u>nucleus</u>. </h3>
<em>Hope</em><em> </em><em>this helps</em><em>.</em><em>.</em><em> </em><em>Good luck</em><em>!</em><em>!</em>
 
        
                    
             
        
        
        
Answer:
what I don't understand what is the Ctcagt
 
        
             
        
        
        
Large crystals indicate that it cooled very quickly. If it cooled slowly, it would have time to settle down and make a nice smooth rock.
        
             
        
        
        
Explanation:
The passing of traits from parents to offspring is Inheritance (D).