Upper surface of base of the skull
        
             
        
        
        
Carbon dioxide because every other option requires an input.
 
        
                    
             
        
        
        
Because their bodies tell them that they need more oxygen and so breathe faster, and try and get the oxygen their body requires and depends on.
        
             
        
        
        
Answer:
D.
Explanation:
i never heard lonosphere when i learned about the three layers of the atmosphere
 
        
                    
             
        
        
        
<h2>
ANSWER:</h2>
1) Back word     2) 2197 kg
<h2>
EXPLANATION:</h2>
recoil (regularly called knock back, kickback or basically kick) is the retrogressive development of a firearm when it is released. so when the cannon is fired  the bullet will move forward and the cannon will move backward
The power of gravity on the moon is 1.6m/s2. Along these lines, the mass of a protest that weight is 21,532, the mass of that question on the moon will be 2197 kg.