Answer:
Kyanite is a major raw material for the mullite used in spark plugs and other refractory porcelains. A clear, deep blue variety is sometimes cut as a gemstone.
Explanation:
Hope this help!!
 
        
             
        
        
        
Answer:
Is this a troll
Explanation:
Just put it on like a shirt or ask someone for help
 
        
             
        
        
        
The answer is Carbon dioxide