Answer:
B
Explanation:
Stratosphere,absorbs rays of damaging ultraviolet light from the sun 
 
        
                    
             
        
        
        
Answer:
<h3>sand is a substance: because is a mixture of two or more material which are not completely comband tougher but are phsicla comband tougher</h3>
 
        
             
        
        
        
Answer:
free molecules; plasma membrane
Explanation:
-Venom are complex mixtures of molecules called "toxins" 
-Plasma membrane is the membrane found in cells that separates the interior of the cell from the outside environment 
 
        
             
        
        
        
Answer:
the lack of sexual attraction to others, or low or absent interest in or desire for sexual activity. It may be considered a sexual orientation or the lack thereof.
Explanation: