- When hydrogen burns in the air water is formed.
- Greek mathematics developed from around the 7th century BC, producing many important theories thanks to great mathematicians such as Pythagoras, Euclid and Archimedes..
- That after petrol, coffee is the largest item bought and sold.
- DNA stands for Deoxyribonucleicacid.
- The average porcupine has 30,000 spikes.
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