multicellular organisms are an organism that cannot grow without oxygen.
multicellular organisms are an organism that cannot grow without oxygen.
an organism that cannot grow without oxygen is a(n)?
multicellular organisms
conclusion could be drawn.' 









































section::::classification.









































for practical purposes, there are three categories of anaerobe: 









































bullet::::- obligate anaerobes, which are harmed by the presence of oxygen. two examples of obligate anaerobes are "clostridium botulinum" and the bacteria which live near hydrothermal vents on the deep-sea ocean floor.









































bullet::::- aerotolerant organisms, which cannot use oxygen for growth, but tolerate its presence.









































bullet::::- facultative anaerobes, which can grow without oxygen but use oxygen if it is present.









































section::::energy metabolism.
anaerobic organism
section::::climbs on 8000 meter peaks.









































1. everest (8848 m, without oxygen south normal route; 5/24/2000)









































2. lhotse (8516 m, without oxygen normal route; 05/23/2001).









































3. hidden peak (gasherbrum 1; 8068 m, without oxygen japanese couloir; 08/13/2001)









































4. gasherbrum 2 (8035 m, without oxygen normal route speed ascent: from 5800 to top in 7 hours 30 minutes, and back to 5800 in 4 hours.; 08/20/2001)









































5. kangchenjunga (8586 m, classical sw-face route without oxygen; 05/13/2002)









































6. shisha pangma (main 8046 m and central summits (8012 m) without oxygen; 10/25/2002)









































7. nanga parbat (8125 m, kinshoffer route, without oxygen; 06/17/2003)
denis urubko