Complex sentence: He separated these layers into 6 different spectra, labeled zones U through Z. The law of superposition is important to note when discussing sedimentary layers; this law states that more recent layers of soil dispersal will overlie older ones.
Split into simpler sentences: He separated these layers into 6 different spectra, labeled zones u through z. The law of superposition is important to note when discussing the study of sedimentary layers. This law is the concept that more recent layers of soil dispersal will overlie older ones.