This layer of the Earth varies in thickness, between 5 km and 35 km. It is broken into large tectonic plates that move as a result of convection currents in the asthenosphere.

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.

there's the proffessional site that will you.

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