- There are around 30 milligrams of caffeine in the average chocolate bar while a cup of coffee has around 100 to 150.
- The shell is 12% of an eggs weight.
- An individual blood cell takes about 60 seconds to make a complete circuit of the body.
- That you can spell the word 'level' the same backwards.
- The first US coast to coast aeroplane flight occurred in 1911 and took 49 days.
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