Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
Species-rich Sonoran Desert landscape.
An oil pump driven by the camshaft.
Typical characteristics of r-selected and k-selected species
