DNA, Archaeal - genetics, Bacteria, Aerobic - genetics, Drug Resistance, Bacterial, Phylogeny, Sequence Analysis, DNA, Bacteria, Aerobic - growth & development, Genetic Variation, Geologic Sediments - microbiology, Electrophoresis, Agar Gel, Polymerase Chain Reaction, Geologic Sediments - chemistry, Metals, Heavy - analysis, RNA, Bacterial - genetics, RNA, R...