Answer:
The trachea serves as a passage for air, moistens and warms it while it passes into the lungs, and protects the respiratory surface from an accumulation of foreign particles.
 
        
             
        
        
        
Answer:
Explanation:
You got it right! It is in fact A.
 
        
             
        
        
        
Answer:
hi here is your answer hope it helps 
Explanation:
All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, adaptation, growth and development, homeostasis, energy processing, and evolution. When viewed together, these characteristics serve to define life.
 
        
                    
             
        
        
        
A. is your correct answer