what kind of vegetation does this mountain support?
The vegetation is dominated by plants such as bunchgrass and Espeletia.
Nevado del Ruiz
Nevado del Ruiz is generally poorly forested because of its high elevation, and its forest cover decreases with increasing elevation. At lower elevations, well-developed mesic forests (20–35 meters / 66–110 ft high) are present. Above these but below the tree line, parts of the volcano are covered with dwarf forests high. Above the tree line, in the Páramo zone, the vegetation is dominated by plants such as bunchgrass and Espeletia. Regional vegetation consists of different families of woody plants, including Rubiaceae, Leguminosae, Melastomataceae, Lauraceae, and Moraceae. Flowers such as "Polypodiaceae s.l.", Araceae, Poaceae, Asteraceae, Piperaceae, and Orchidaceae are also present in the region.
what type of eruption does nevado del ruiz produce The volcano usually generates Vulcanian to Plinian eruptions can you explain the first one? It is a type of volcanic eruption characterized by a dense cloud of ash-laden gas exploding from the crater and rising high above the peak and what kind of material does the second one eject? It ejects  Pumice where is the above mentioned volcano located? It is located on the border of the departments of Caldas and Tolima in Colombia, about west of the capital city Bogotá how old is it in terms of volcanic activity? UNANSWERABLE
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Nevado del Ruiz [SEP] Flora and fauna
Nevado del Ruiz is generally poorly forested because of its high elevation, and its forest cover decreases with increasing elevation. At lower elevations, well-developed mesic forests (20–35 meters / 66–110 ft high) are present. Above these but below the tree line, parts of the volcano are covered with dwarf forests high. Above the tree line, in the Páramo zone, the vegetation is dominated by plants such as bunchgrass and Espeletia. Regional vegetation consists of different families of woody plants, including Rubiaceae, Leguminosae, Melastomataceae, Lauraceae, and Moraceae. Flowers such as "Polypodiaceae s.l.", Araceae, Poaceae, Asteraceae, Piperaceae, and Orchidaceae are also present in the region.