claim: Musala is a mountain.
evidence: A mountain is a large landform that stretches above the surrounding land in a limited area , usually in the form of a peak .. landform. landform. A mountain is generally steeper than a hill .. hill. hill. Mountains are formed through tectonic forces or volcanism .. Mountains are formed. Mountain formation. tectonic forces. tectonic plate. volcanism. volcanism. These forces can locally raise the surface of the earth .. Mountains erode slowly through the action of rivers , weather conditions , and glaciers .. weather conditions. weathering. A few mountains are isolated summits , but most occur in huge mountain ranges .. High elevations on mountains produce colder climates than at sea level .. colder climates. alpine climate. sea level. sea level. These colder climates strongly affect the ecosystems of mountains  : different elevations have different plants and animals .. colder climates. alpine climate. different plants and animals. altitudinal zonation. Because of the less hospitable terrain and climate , mountains tend to be used less for agriculture and more for resource extraction and recreation , such as mountain climbing .. mountain climbing. mountain climbing. The highest mountain on Earth is Mount Everest in the Himalayas of Asia , whose summit is 8850 m above mean sea level .. summit. summit ( topography ). sea level. sea level. Earth. Earth. Mount Everest. Mount Everest. Himalayas. Himalayas. Asia. Asia. mean sea level. mean sea level. The highest known mountain on any planet in the Solar System is Olympus Mons on Mars at 21171 m.. highest known mountain. List of tallest mountains in the Solar System. Solar System. Solar System. Olympus Mons. Olympus Mons. Mars. Mars