Ключевые слова: analysis, analyzing, ancient, anthropology, archaeological, archaeologist, archaeology, archeology, artifact, chemical, chemist, chemistry, discovery, doctor, examining, experiment, explorer, find, finding, fluid, fossil, geologist, ground, historic, history, lab, laboratory, looking, man, mineral, mixture, old, paleontologist, paleontology, prehistoric, prehistory, presenting, radioactive, remains, research, researcher, reservation, science, scientific, scientist, soil, stone, studying, trace, work,