Answer: to inform reader to be careful with oxygen masks
Explanation: I just did 1.10 quiz at k12 and got 100%. good luck on ur test. 
 
        
                    
             
        
        
        
Answer:
I'm pretty sure it's isolated but don't get mad if I'm wrong!!!
Explanation:
-viridancat4, an 8th grader.
 
        
             
        
        
        
Cause rnfndkekkdjfmfmdkekekkdjdnddn