Snowflakes always have six sides because of the hexagonal structure of ice crystals.
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Time moves slower in stronger gravitational fields.
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The vaccination syringe improved medical delivery methods.
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The development of anesthesia made complex surgery possible.
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The barometer measures atmospheric pressure.
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Fossil evidence suggests some dinosaurs cared for their young.
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The door-in-the-face technique uses large requests to gain smaller agreements.
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Fossil discoveries continue to reshape scientific understanding.
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The Asch conformity experiment demonstrated the influence of group pressure.
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