1) Bats are the only mammals capable of sustained flight.

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

3) The ocean covers about 71% of the Earth's surface and contains roughly 97% of the planet's water.

4) Native American mythology is incredibly diverse, with numerous tribes and cultures across North and South America having their own unique traditions and stories. It encompasses deities, nature spirits, tricksters, and heroes, reflecting the deep connection between indigenous peoples and the natural world.