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The Excretory System



The Excretory System

A Short Reader

Reading Level
     edHelper's suggested reading level:   grades 5 to 8
     Flesch-Kincaid grade level:   5.29

Vocabulary
     challenging words:    unwanted, dioxide, unused, carbon, urea, exhale, harmful, excretory, organ, liquid, body, during, cell, bladder, chemical, process


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The Excretory System
By Brandi Waters
  

1     Inside your body are many harmful chemicals. Many of them are made inside your body. Your body is made of living cells. The cells need energy to live. They get energy from the foods that you eat. Sugars, fats, and proteins can all be turned into energy for the cells to use. The cell breaks them down into small pieces, but not every piece can be used. The process of making energy also makes other chemicals that your body cannot use. The chemicals that are left over from or created during this process can be harmful if there are too many of them in your body. Your body gets rid of these harmful chemicals through the excretory system.
 
2     The excretory system is your body's way of removing harmful waste from your blood. It is made up of your lungs, your kidneys, and your skin. Each of these organs removes a different kind of waste from your body. Your lungs remove harmful gases. Carbon dioxide is a waste gas that is made when your cells make energy. The carbon dioxide is carried by your blood to your lungs. In your lungs, carbon dioxide is released from your blood. Oxygen takes its place. Carbon dioxide is removed from .....
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