Not enough ..................
        
             
        
        
        
Answer:
the answer is 40c because i just took the test
Explanation:
 
        
             
        
        
        
B. atmosphere since the atmosphere is made up of o2, co2 (a greenhouse gas) and nitrogen. those are the primary elements
        
             
        
        
        
The nasal cavity is the hollow pipe (your nostril and upwards) that is covered with hairs and muscus membrane. Its main functions are to warm, moisturise, and filter air before it entering the body. 
Hope it help :)
Puffin
        
                    
             
        
        
        
Answer:
I am almost sure that it is C, but it could possibly be A
Explanation: