The correct answer would be a positive feedback loop. when contractions happens its to help get the baby out and to let you know when the baby is coming so when the contractions start it means you are going into labor. 
        
                    
             
        
        
        
By looking at there chromosomes such as the x and y gametes
        
             
        
        
        
As we break down the glucose via glycolsis and then Kreb cycle , the carbons releases from of our body in the gaseous form called CO2 !!
38 ATP is formed as a result !! And in waste CO2 is formed !!
        
             
        
        
        
Touching a hot pan and yanking your hand away--That is nervous system.
Going through puberty is controlled by the pituitary gland.
jumping up and down is controlled by the muscular system.
Breathing harder during a jog is controlled by the respiratory system.
Getting energy to sit through class by eating cereal and a banana is controlled by digestive system and muscular system.
hope it helps
        
             
        
        
        
The kiiten use to be used bye biger cats they would somtimes hurt them mostly the simies cats