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Product Information Another in a series of lessons examining comparative life function systems, this lesson examines the function of the digestive system, and how it evolved and how it works in different organisms. 1. Paramecium–Ingestion (200x)/ Digestion (100x) 2. Hydra–w.m. (11x) 3. Planaria–w.m. (3x) 4. Earthworm–sag. s. (7x) 5. Grasshopper–Mouthparts (1x) 6. Frog Intestine–x.s. (20x) 7. Villi (50x)/Intestinal Glands (125x) 8. Human–Large Intestine (400x)  Tell a Friend about this item
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