REM's are associated with dreaming. we spend the longest time in the REM stage. REM sleep is marked by a return to fast, irregular EEG patterns similar to those of stage 1. the brain is so active during REM it looks like the person may be awake
        
             
        
        
        
No , an organism produced by meiosis causes more diversity due to crossing over
        
             
        
        
        
Answer:
Temperature
Altitude or Elevation
Moisture or water vapour.
Explanation:
 
        
             
        
        
        
Once the Earth was full of water (ocean) after volcanic activities the mainland became land ( sorry about my english i am hungarian and i am still learning the language )
        
                    
             
        
        
        
TRUE. 
Infection is the invasion or colonization of the body by potentially pathogenic microorganisms.