a foot consists of twelve inches. five feet times twelve= sixty inches.
abiotic: which are the non-living factors and chemicals in environments which can affect the ecosystem.
the difference between topsoil and garden soil is an even finer distinction than the difference between soil and dirt, and it has to do with the amount of organic matter, and to a lesser extent, the types of trace minerals and the ratio of clay, sand and silt. garden soil is a category of topsoil