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4 Written questions

3 Multiple choice questions

  1. The largest population that an environment can support is called its
  2. The relationship between humans and Escherichia coli bacteria in their intestines is an example of
  3. The struggle among organisms for the limited resources in an ecosystem is called

3 True/False questions

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


  2. samplingWhich of the following is NOT a biotic factor?


  3. population, community, ecosystemA relationship in which one organism benefits and the other is neither helped nor harmed is called