The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.
 
        
                    
             
        
        
        
Infrared has a lower frequency than ultraviolet light.
        
                    
             
        
        
        
Answer:
Cytokinesis is the physical process of cell division, which divides the cytoplasm of a parental cell into two daughter cells. ... The contractile ring shrinks at the equator of the cell, pinching the plasma membrane inward, and forming what is called a cleavage furrow.
Explanation:
hehe plss give me a heart
 
        
                    
             
        
        
        
The dialysis bag will remain the same size in a isotonic solution.
        
             
        
        
        
Renewable reasorces are those replenished by nature like trees for instance, those are renewable