The picture shows a temperate forest biome. The soil in a temperate forest biome is very fertile. Which feature of this biome causes fertile soil?
A
The warm summers dry out the soil, which increases the concentration of nutrients.

B
The leaves fall off the trees each year and decay, which provides nutrients to the soil.

C
The dry climate is ideal for weathering rocks and other materials, and this creates more soil.

D
The animals hibernate each winter, and the soil can make more nutrients wi