Labels:chat room | earth | hakham | mountain | person | plant | seat | shelf | sky | stop sign | tree | windowpane OCR: ENAMEL NAMEL IS the hardest substance in your body forms the outside layer of the crow ns of your teeth providing a hard biting surface that S not easily worn down. Enamel made up of parallel rods that are cemented together by an equally hard substance. Once piece of enamel has been chipped off, it is not replaced. Enamel EnAMEI
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