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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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There are 20 feet of blood vessels in each square inch of human skin.

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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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The horizontal fraction bar was introduced by the Arabs.

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It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

The nitrogen cycle. The five main parts of the nitrogen cycle are: The nitrogen cycle. The five main parts of the nitrogen cycle are:
Nitrogen Cycle Nitrogen Cycle
The distribution of cones and rods over the human retina. The figure illustrates the number of cones ... The distribution of cones and rods over the human retina. The figure illustrates the number of cones ...
Mobilize the joints in the hand. Follow with figure-8s at the knuckles and scissoring the ... Mobilize the joints in the hand. Follow with figure-8s at the knuckles and scissoring the ...
As shown in the figure, a large open tank contains a layer of oil ( density 450 kg/m3) floating ... As shown in the figure, a large open tank contains a layer of oil ( density 450 kg/m3) floating ...
Pineapples carry harmful insect shell insects, safe to eat? Pineapples carry harmful insect shell insects, safe to eat?
Video: Hypoglycemia Animation

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