1) Mountains are formed through various geological processes, including tectonic plate movements, volcanic activity, and erosion.

2) Mountains are important water sources, as they capture and store precipitation, feeding rivers and supporting ecosystems downstream.

3) Angelina Jolie is an American actress, filmmaker, and humanitarian. She has received critical acclaim for her performances in films such as "Girl, Interrupted," "Mr. & Mrs. Smith," and "Maleficent," and has been actively involved in humanitarian work around the world.

4) The highest-grossing concert tour of all time is U2's "360° Tour," which earned over $735 million in ticket sales.