- The average mature oak tree sheds over 700,000 leaves in Autumn.
- Much of the work done by Leibniz and Newton is based on theories by French philosopher Rene Descartes. As well as his many contributions to philosophy, Descartes also had a huge impact on mathematics, creating analytical geometry, developing a system that describes geometry using algebra, contributing to optics and much more..
- The atomic symbol for iron is Fe (the original name for iron was Ferric).
- Catoptrophobia is the fear of mirrors.
- Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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