Answer:the resistance that one surface or object encounters when moving over another.
Explanation:it is easy!
 
        
             
        
        
        
The answer is D; homeostasis allows the maintenance and regulation of stability and constancy that is needed to properly function. It is found in cells, tissues and organisms,
        
                    
             
        
        
        
Answer:
a.  the reindeer population exceeded it carrying capacity
Explanation:
not enough food for the reindeers  due to an increase in deer population.