- The number Pi (the ratio of the circumference to the diameter of a circle) can't be expressed as a fraction, making it an irrational number. It never repeats and never ends when written as a decimal..
- 80% of the world's food crops are pollinated by insects.
- 90% of all volcanic activity occurs in the ocean.
- You use 72 different muscles while speaking.
- A soap bubble is 10,000 times thinner than the average human hair.
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