Answer:
The area that have deepest layer of top soil is grassland.
Step-by-step explanation:
The area that have deepest layer of top soil is grassland.
the grassland serves following important advantages.
It offers high-quality, relatively low-cost animal and wildlife food. Helps to keep soil fertility since it supports better organic soil grades than row crops
It is full of nutrients from deep, multi-branched grassroots rising and decreasing. Rotted roots keep the soil together & provide living plants with a source of food.