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4 Written questions

3 Multiple choice questions

  1. Which of the following is NOT an abiotic factor?
  2. The relationship between humans and Escherichia coli bacteria in their intestines is an example of
  3. A relationship in which one organism benefits and the other is neither helped nor harmed is called

3 True/False questions

  1. warning coloringA defense strategy in which an organism draws attention to itself is


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


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


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