Another study, published back in 1995, showed that although the compressive strength of concrete was enhanced only slightly by the addition of polymer fibres, its impact resistance improved sevenfold.

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Tornados are rated on several scales for strength based either on wind speed, pressure drop, or damaged caused, but the updated Enhanced Fujita Scale is the presently accepted scale in the United States.

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"We know low levels may impact muscle strength and bone turnover, but if an athlete has adequate levels there is no evidence of an enhanced benefit to performance, so natural talent and athletic ability is more likely, " Stevenson told CNN.

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