Answer: C
Explanation: The Moon has phases because it orbits Earth, which causes the portion we see illuminated to change. The Moon takes 27.3 days to orbit Earth, but the lunar phase cycle (from new Moon to new Moon) is 29.5 days.
        
                    
             
        
        
        
Answer:
When water freezes, the temperature decreases and therefore, the average kinetic energy will decrease as well
 
        
             
        
        
        
<span>The appendicular skeleton includes the bones of the shoulder girdle, the upper limbs, the pelvic girdle, and the lower limbs.</span>
        
             
        
        
        
The answer is D. all of the above 
        
                    
             
        
        
        
Answer:
The major function of the immune system is to protect the host from environmental agents such as microbes or chemicals, thereby preserving the integrity of the body.
Explanation: