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Chapter 21

Chapter 21: Animal Nutrition and Digestion

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21.1: Activity: Digestion and absorption of food

Test your recall for figure 21.3 with this key figure labeling exercise.

21.2: Activity: The human digestive system

Test your recall for figure 21.7 with this key figure labeling exercise.

21.3: Activity: The typical digestive system

Test your recall for figure 21.9 with this key figure labeling exercise.

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