All the midwest states do under federal law
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The human body is mostly made up of water (H2O), and there is one oxygen atom in each molecule of water. Note that, although each water molecule also contains two hydrogen atoms, the atomic mass of hydrogen (about 1) is much smaller than the atomic mass of oxygen (about 16). Because of this, hydrogen contributes less to human body mass than oxygen.
In the process of deglutation, or what is commonly known as swallowing, the bolus of food in the pharynx will be pushed down to the esophagus. In the esophagus, the epiglottis will cover the larynx so the food will not get into the airway.
