Answer:
B. involuntary activities
 
        
             
        
        
        
Answer:
Rare materials 
Explanation:
These raw materials are to be used for proper development and industrialization of this society 
 
        
                    
             
        
        
        
Answer:
A dichotomous key is an important scientific tool, used to identify different organisms, based the organism’s observable traits. Dichotomous keys consist of a series of statements with two choices in each step that will lead users to the correct identification.
Explanation:
Your welcome! :)
 
        
             
        
        
        
Normally, oxygen from the blood cells supply your muscles with the energy it needs to carry out certain actions. However, when there isn't enough oxygen to support the muscles, it produces lactic acid, or fermentation, to make up for the oxygen. (That's why you get that burn-y feeling whenever you exercise!)
 
        
             
        
        
        
I think the answer your looking 4 is B 
HOPE THIS HELPS
#Optimist