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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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Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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Blood is approximately twice as thick as water because of the cells and other components found in it.

Countercurrent heat exchange in dolphin flippers promotes conservation of body heat. Countercurrent heat exchange in dolphin flippers promotes conservation of body heat.
Glowing Base Of Tree Made By Arranging Leaves Glowing Base Of Tree Made By Arranging Leaves
A healthy diet is made up of well-balanced nutrients. A healthy diet is made up of well-balanced nutrients.
A gasoline testing kit, including an insulated container where water at 100°F is used to heat a ... A gasoline testing kit, including an insulated container where water at 100°F is used to heat a ...
Cover heat source to slow cooling by placing a towel over it. Cover heat source to slow cooling by placing a towel over it.
The Heat Index. The Heat Index.
Video: Pressure Flow Model Animation

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