Ellis Island was the principal federal immigration station in the United States from 1892 to 1954. More than 12 million immigrants were processed here. Over time, the immigration station spread over 3 connected islands with numerous structures including a hospital and contagious disease wards.
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   Anaerobic respiration is the process by which non-oxygen dependent  organisms breath. It is mostly commonly used in the process of  fermentation.    Anaerobic respiration is respiration that uses electron acceptors  other than oxygen.Anaerobic respiration can be found in protozoans  and bacteria. Anaerobic respiration is a type of cellular respiration. It occurs  when oxygen is not available or is available in very low  quantities.It is also a respiration in the absence of oxygen.Oxygen is not used as the final electron acceptor.  Anaerobic respiration is the process by which non-oxygen dependent  organisms breath. It is mostly commonly used in the process of  fermentation.    Anaerobic respiration is respiration that uses electron acceptors  other than oxygen.