Owner of Jones Mineral Cabinet, Geology and Paleontology Supervisor, interested in Earth and Planetary sciences. #1. Clastic or Detrital Sedimentary Rocks The class(t)ic route begins with the weathering and erosion of sedimentary, igneous, or metamorphic rocks.
A flame retardant is a chemical substance that is added to materials during their manufacturing process in order to both reduce the likelihood of the finished product catching fire and slow down combustion. Source: GreenFacts.
Flame retardants are compounds added to manufactured materials, such as plastics and textiles, and surface finishes and coatings that inhibit, suppress, or delay the production of flames to prevent the spread of fire.