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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

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Green tea is able to stop the scent of garlic or onion from causing bad breath.

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Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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