Smoking is injurious to health but how harmful can it be? Some scientists in China did an experiment to showcase that. They lit a cigarette and liquid containing the smoke was injected into a mouse. Three minutes later, the mouse began to twitch and struggle. After five minutes, its legs stretched tight, finally succumbing to the smoke. In contrast, the mouse injected with distilled water was intact. The scientific principle is that tobacco contains large amounts of toxic substances and high concentrations of such poisonous substance would make the mouse suffer.
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