1) The word "cheese" contains three vowels: E, E, and E.

2) The word "umbrella" contains three vowels: U, E, and A.

3) The Mariana Trench in the western Pacific Ocean is the deepest part of the world's oceans, reaching a depth of approximately 36,070 feet (10,994 meters).

4) 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).