The answer is white blood cells. 
Lymph, is similiar to the blood but has more concentration of white blood cells. There are different types of this cells, but to simplify, some of them will work against bacteria that do us harm. In our intestines, there are a lot of bacteria, in which most of them is good. Sometimes p<span>athogenic bacteria can appear but the white blood cells will eliminate them.</span>
        
             
        
        
        
Peers are influencing how Andrew thinks about what is normal behavior.
        
             
        
        
        
A few difficulties would be caring for a newborn and providing for one another
        
                    
             
        
        
        
The impact on lack of housing is more illness, more drug use, and more crime.