The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.
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Green tea is able to stop the scent of garlic or onion from causing bad breath.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
Winter distribution of the American crow, Corvus brachyrynchos.
The American paddlefish is poached for its eggs
Painting of a Colonial American boy holding a pet squirrel.
The sense of hearing.
To search for the Native American family would be fruitless. There are rural, urban, single-parent, ...
PMDD Diagnostic Criteria from the American Psychiatric Association