The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
Benzene delocalized electrons
Calcium Carbonate, an Important Carbon Sink
Carbon Dioxide
Three-carbon acyl-CoA
Functional Groups of Carbon
Draw the electric field of: •An electron and proton •Two electrons