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Type: Multiple-Choice
Category: Respiration, Digestion, and Excretion
Level: Grade 9
Score: 2
Author: JVance
Last Modified: 7 months ago

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Respiration, Digestion, and Excretion Question

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Grade 9 Respiration, Digestion, and Excretion

                secreted by specialized cells in the stomach prevents the stomach from being damaged by gastric juice.
  1. Mucus
  2. Enzymes
  3. Antibodies
  4. Blood cells
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