Adoption, and have a serogacy (not sure if that's how you spell it)
Answer:
The ball cant roll because the rough surface blocks the movement.
The rough surface will make it eventually slow down and stop.
Answer:
The Pearson square ration formulation procedure is designed for simple rations.
In order for the square to work, follow specific directions for its use.
Nutrient contents of ingredients and nutrient requirements must be expressed on the same basis (i.e., dry-matter or “as-fed”).