What Makes Clouds and Why Do They Change Their Shapes?
What Makes Clouds and Why Do They Change Their Shapes? Clouds consist of droplets of water or tiny crystals of ice that float in the air. Clouds form when warm air,...
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Who Steers a Train?
Believe it or not, nobody steers a train. The wheels of a train and its rails work together to steer the train. The wheels of a train have a special shape. Each one has...
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How Is Cartilage Different than Bone?
How Is Cartilage Different than Bone? Your nose and your ears allow you to sense things, but there’s something else inside them that they share. The stuff under...
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