Which biome is most likely to be found on the top of a very tall mountain in a tropical zone? 

A)  a temperate deciduous forest 
B)  a grassland 
C)  a desert 
D)  a tundra

A tundra biome is characterized by very low temperatures, strong winds, and short growing seasons, making it ideal for the top of a very tall mountain in a tropical zone where the altitude produces cool temperatures similar to those found in a tundra biome. A temperate deciduous forest would not be found in a tropical zone and requires a much lower elevation. Grasslands and deserts thrive in warmer temperatures with less precipitation than a tundra biome, making them less likely to be found on the top of a very tall mountain in a tropical zone.