Respuesta :
Answer: Topsoil
Explanation: Topsoil is the layer with the most organic material, and the most aerated. Worms are actually a critical ingredient for the formation of this layer and if they go deeper, it is too dense for worms to burrow.
Answer: Topsoil
Explanation: Topsoil is the layer with the most organic material, and the most aerated. Worms are actually a critical ingredient for the formation of this layer and if they go deeper, it is too dense for worms to burrow.