4 Written questions
3 Multiple choice questions
- Which of the following is NOT a biotic factor?
- Which of the following sequences goes from the simplest level to the most complex?
- The struggle among organisms for the limited resources in an ecosystem is called
3 True/False questions
trees → An organism's role in an ecosystem is called its
symbiosis → The relationship between humans and Escherichia coli bacteria in their intestines is an example of
sampling → Counting the number of organisms in a small area and multiplying to estimate the total population is called