1) The word "oxygen" contains two vowels: O and E.

2) Insurance fraud occurs when individuals or organizations deliberately deceive insurance companies to receive undeserved benefits.

3) Antarctica is the coldest, driest, and windiest continent on Earth. It is also the highest, with an average elevation of about 7,545 feet (2,300 meters).

4) A single bolt of lightning can heat the surrounding air to temperatures five times hotter than the surface of the sun.