1) The deepest part of the ocean is the Mariana Trench, reaching a depth of about 36,070 feet (10,994 meters).

2) The concept of sovereignty refers to the supreme authority and power of a state to govern itself, make decisions, and control its own territory without interference from external forces.

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

4) Automated Teller Machines (ATMs) allow individuals to perform banking transactions, such as withdrawing cash, outside of traditional bank branches.