Explain why there are no tall trees in the tundra biome. what are some of the biotic and abiotic phenomena that exist in the tundra?

Tundra is the coldest biome on earth. Tundra got it's name by word "tunturia" which means treeless plains. Tundra biome is characterized by extremely low temperatures, dead organic matter in the nutrient pool and low light intensities. Trees in the tundra biomes are adapted to sweeping winds and nutrient deficiency of soil. These trees are short to resist cold temperatures and falling snow.  

Abiotic factors like temperature is extremely cold, the upper layer of the soil get freezed- permafrozed. Biotic factors like animals go for hybernation because they cannot sustain in cold temperatures.  

i think its the first one

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.