Mark the main active volcanoes of the Northern Hemisphere with a red asterisk (*).
Label the following mountain systems on the map: Cordilleras, Alps, Himalayas, Ural Mountains, Great Dividing Range.
Mark the highest points of all continents with a symbol, write their names and absolute altitudes next to them. Number the continents from 1 to 6 in descending order of the altitude of the marked points.