1) The English alphabet has five vowels: A, E, I, O, and U.

2) The process of photosynthesis, performed by plants, algae, and some bacteria, is responsible for producing the oxygen we breathe.

3) Usain Bolt of Jamaica holds the world records for the 100 meters and 200 meters sprints, with times of 9.58 seconds and 19.19 seconds, respectively.

4) The oldest known musical instrument is a flute made from a bird bone, estimated to be around 43,000 years old.