Final answer:
In the Finish Grade step of Establishment, irrigation, rainfall, and roto-tillage aid in settling the soil.
Step-by-step explanation:
In the Finish Grade step of Establishment, irrigation, rainfall, and roto-tillage all aid in settling the soil.
Irrigation, which is the controlled application of water to the soil, can help settle the soil by providing moisture that helps compact the soil particles.
Rainfall, on the other hand, can also help settle the soil by naturally saturating the soil and creating pressure that pushes the particles together.
Roto-tillage, which is the mechanical loosening and turning of the soil, can break up compacted soil and create a more favorable environment for settling.