Any three differences between topsoil and subsoil

Subsoil is the layer underneath the surface topsoil, which consists of greater minerals and materials of iron and aluminum compounds than topsoil. ... The subsoil tends to be more compact than topsoil, since it does not hold any air in the soil.

Explanation:

he topsoil is relatively thin but it has most of the soil's nutrients. Just below the topsoil layer is the subsoil layer. The subsoil may contain some broken down organic matter but it is mostly made of weathered rocks and clay minerals.

reflecting point a across the origin negates both of its coordinates.

b = (5, -4)