The small cell extensions that beat to create an up-ward current are called microvilli. 
<h3>What are microvilli?</h3>
Microvilli are small extensions which are found on the surface of the alveoli of the lungs.
The microvilli play an important role in the lungs as the help to remove particles and mucus that may obstruct the lungs as a result of the upward current they create in the lungs from their beating motion.
Therefore, the paralyzed small cell extensions that beat to create an up-ward current are called microvilli. 
Learn more about lung microvilli at: brainly.com/question/12993303
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Answer:
No
Explanation:
Electromagnetic waves travel slowest in dense matter such as solids. On the other hand, mechanical waves travel quickly through solids. For example, sound travels fastest through solids. This difference is because EM waves do not rely on the movement of particles to travel. Since they require no medium they can travel the fastest in space or other vacuums. 
 
        
             
        
        
        
Cellular respiration is the process by which the body breaks down sugar like glucose, to release ATP, which is an energy storing molecule. This is how the body gets energy from food.
 
        
                    
             
        
        
        
Answer:
C; Carbon dioxide concentrations increase with depth due to less uptake and decomposition of organic matter at depth.
Explanation:
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