Topsoil is the upper, outermost layer of soil, usually the top 5–10 inches. It has the highest concentration of organic matter and microorganisms and is where most of the Earth’s biological soil activity occurs. Topsoil is composed of mineral particles, organic...
Aggregate is a term that is used to describe a broad category of particulates used in construction and landscaping. Aggregate can be made up of crushed stone, gravel, sand, recycled concrete, slag, and other mined materials. If you are looking for nice appearance, low...
