Which bird part helps grind up food that the bird has eaten?

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Multiple Choice

Which bird part helps grind up food that the bird has eaten?

Explanation:
Birds don’t have teeth, so they rely on a muscular, grinding chamber to break up food: the gizzard. The gizzard crushes and grinds swallowed food, often using small stones or grit that the bird has ingested, turning it into smaller particles ready for chemical digestion in the intestines. The heart, liver, and spleen perform other body functions—circulation, metabolism, and immune responses—not grinding food—so they don’t fit the role described.

Birds don’t have teeth, so they rely on a muscular, grinding chamber to break up food: the gizzard. The gizzard crushes and grinds swallowed food, often using small stones or grit that the bird has ingested, turning it into smaller particles ready for chemical digestion in the intestines. The heart, liver, and spleen perform other body functions—circulation, metabolism, and immune responses—not grinding food—so they don’t fit the role described.

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