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

2) 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.

3) The word "piano" contains three vowels: I, A, and O.

4) The Pacific Ocean is the largest ocean on Earth, covering more than 30% of the planet's surface.