Answer:
Number 3
Explanation:
Number 3 or C is correct, "action of white blood cells when certain bacteria enter the body." This is the correct answer because white blood cells are in your body to fight off infections. some peoples immune system see these bacteria on the peanut, egg, or milk as an enemy so it tries to fight against it even though it is harmless to the body. 
 
        
             
        
        
        
<span>let the pair of glasses in each layer in small box= x
and the pair glasses in each layer in large box= x-2
total pair of glasses in large box= 5(x-2)
total pair of glasses in small box= 1x</span>
        
             
        
        
        
Answer: Energy can not be lost, rather it can be converted into other forms of energy , so false.
Explanation:
 
        
             
        
        
        
 The expression of genes in an organism can be influenced by the environment, adding the external world in which the organism is or where it develops, as well as the organism's internal world, which includes such factors as its hormones and metabolism.