Assertion: biome's soil | /r/HasProperty | frozen
Facets:
value: mostly
type: DEGREE
value: from 25 to 90 cm
type: OTHER
Source sentences:
text: The soil there is frozen from 25 to 90 cm (10 to 35 in) down, making it impossible for trees to grow.
text: Loss of water by seepage is also prevented because the soil is frozen.
text: Soil in the polar biome also forms slowly and is mostly frozen, which makes it even harder for this biome to support vegetation6.