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Biology, 05.05.2020 18:02 AikawaAisyah2438

Which characteristic describes the digestive system of the bird but not the cnidarian?

A. Food particles are absorbed into the body by diffusion.
B. The digestive cavity carries both food and wastes.
C. Materials travel in one direction only through the digestive cavity.
D. Specialized cells and tissues aid in digestion.

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Which characteristic describes the digestive system of the bird but not the cnidarian?

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