We see the moon because the sun's light reflects off it. So the phases change depending on how much the sun reflects of it. The moon circles around the Earth so at certain times there will be a full moon and at certain times a new moon and everything in between. 
 
        
             
        
        
        
ans is D. Most items are features in the spinal cord, but the hippocampus is in the brain.
 
        
                    
             
        
        
        
Answer:
60 beats per minute
Explanation:
heart rate is measured in minute, if he counted for 10 seconds, he would need to multiply that number by 6 to get his resting heart rate. 10×6=60
 
        
             
        
        
        
Answer:
Thin bodies.. The keyword is flatworm.
Explanation:
Hope this helps!