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  1. Hace 5 horas · Field pictures showing different devices and scientific equipment of common use in geochemical, geomicrobiological, limnological and sedimentological research in acidic pit lakes: (a, b) Multiparametric probes (datasondes), (c) rubber boat for field sampling, (d) plankton net, (e) sediment trap, (f) pre-perforated bottles for mineral reaction studies, (g) optodes for continuous measurement of ...

  2. Hace 5 horas · Protozoa This classification includes various unicellular organisms such as amoebas, flagellates, and ciliates. However, it excludes other related groups like algae and fungi, which are also eukaryotic organisms but have distinct evolutionary characteristics and differences in their cellular structure.

  3. Hace 1 día · (Schoolhouse Pictures) c-28m: 1987: Part animation: America's Story: George Washington (Schoolhouse Pictures) c-26m: 1987: Part animation: American Bald Eagle: c-16m: January 7, 1971: Video: American Buffalo: The Comeback Trail (Moreland-Latchford Productions) c-10m: 1974: American Indians Before European Settlement: David A. Baerreis: c-11m ...