1) The national animal of Canada is the beaver.

2) Mount Everest, located in the Himalayas, is the highest peak on Earth, with an elevation of 8,848 meters (29,029 feet). It is a popular destination for mountaineers and represents a significant challenge due to its extreme altitude and harsh weather conditions.

3) The word "computer" contains three vowels: O, U, and E.

4) The smallest unit of time is known as a zeptosecond, which is equal to one trillionth of one billionth of a second.