- The vocabulary of the average person is between 5,000 to 6,000 words.
- 20% of China's plants are used in medicine.
- Once a women reachs the age of 30 they lose 1% of their bone mass every year thereafter (by the time a women is 50 she will have lost 20%).
- Most cows produce more milk when they listen to music.
- Hippopotamuses have killed more people in Africa than any other animal.
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