A phospholipid is a lipid made of a phosphate group with two fatty acids.
A second messenger is a molecule inside cells that acts to transmit signals from a receptor to a target. 
Hoped this helped.
~Bob Ross®
        
             
        
        
        
Answer:
starch is made by plants whie cellulose is not
 
        
             
        
        
        
Honestly it would be the Exosphere<span> but since that's not one of the choices it would be the Thermosphere. </span>
        
                    
             
        
        
        
False
Frigid zone is the one near poles
        
             
        
        
        
Because the air freshener is being released out in to open, so it spreads everywhere.
Hope that helps :)