Article: Dinosaur world: how much do you know about these creatures from long ago?(SCIENCE)

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The Land Before People

Dinosaurs once ruled earth.

Dinosaurs roamed Earth millions of years ago. Some dinosaurs were as small as chickens. Others were larger than houses.

Dinosaur Food

Scientists often group dinosaurs by the food they ate. Most dinosaurs ate plants. Those dinosaurs are called herbivores. They had flat teeth.

Some dinosaurs ate meat. Those dinosaurs are called carnivores. Carnivores had sharp teeth.

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