Answer:
Shivering and sweating.
Explanation:
A prolonged exposure to extreme cold environment would activate the brain's heat-gain center. Your brain's heat-gain center causes shivering in order to increase our muscle contraction which leads to warming of our body.  Increase sweating is the regulatory processes our body use if it experience very high temperature. In order to regulate internal temperature of body, our body remove water which takes up heat with itself to lower th internal temperature.
 
        
             
        
        
        
Acetylcholine..
hope it helps
        
             
        
        
        
The right lung<span> has </span>both<span> more </span>lobes<span> and segments than the left. It is </span>divided into <span>three </span>lobes<span>, an upper, middle, and a lower, by </span>two<span> fissures, one oblique and one horizontal. The upper, horizontal fissure, separates the upper from the middle </span>lobe<span>.</span>
        
                    
             
        
        
        
Answer:
 the answer is this Carbohydrate 
 
        
             
        
        
        
Answer:
A. Obtaining nutrients and getting rid of waste