Answer:
The air at higher altitudes is colder, less dense, and contains fewer oxygen molecules. This means that you need to take more breaths in order to get the same amount of oxygen as you would at lower altitudes. The higher the elevation, the more difficult breathing becomes
Explanation:
 
        
             
        
        
        
Answer:
54
Explanation:
 you have to use the principal of BODMAS
12 + 23 x 2 + 3 - 7
12 + 46 + 3 - 7
61 - 7
54
 
        
             
        
        
        
Doing my homework, studying, being responsible, thousands of ways you can.
 
        
             
        
        
        
Keely experiences feelings of revulsion at the thought of watching footage from the Nazi's death camps. Freud would attribute these feelings to Keely's <span>superego.
</span>According to Freud, super-ego deals with moral issues that a person may have - so it helps us form appropriate opinions about what is right and what is wrong. Keely understands that the Holocaust is a bad thing, and naturally he feels disgusted by it.
Hope This Helped! :3
        
             
        
        
        
Answer:
a
Explanation:
high level of lead in drinking water could lead to neurological