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2 Written questions

2 Multiple choice questions

  1. conversion by lightening, bacteria, and cyanobacteria of atmospheric nitrogen gas into forms useful to plants - it is part of the nitrogen cycle
  2. a random change in DNA molecules making up genes that can alter anatomy, physiology, or behaviors in off-spring

2 True/False questions

  1. commensalismevolution in which two or more species interact and exert selective pressures on each other that can lead to each species to undergo adaptions


  2. ecological nichean interaction between organisms of different species in which one type of organism benefits and the other type is neither helped nor harmed to any great degree


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