1) The eye of a cyclone is a region of calm, relatively clear skies and light winds at the center of the storm.

2) The Rocky Mountains, also known as the Rockies, extend from Canada through the United States, offering stunning landscapes and outdoor recreational opportunities.

3) The first computer mouse was invented by Douglas Engelbart in 1964 and consisted of a wooden shell and two metal wheels.

4) The word "chocolate" contains four vowels: O, O, A, and E.