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4 Written questions

3 Multiple choice questions

  1. The relationship between humans and Escherichia coli bacteria in their intestines is an example of
  2. An organism's role in an ecosystem is called its
  3. The largest population that an environment can support is called its

3 True/False questions

  1. sunlightAn organism's role in an ecosystem is called its

          

  2. commensalismA relationship in which one organism benefits and the other is neither helped nor harmed is called

          

  3. samplingCounting the number of organisms in a small area and multiplying to estimate the total population is called

          

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