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Ecosystems and the Effects of Pollution Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. Which of the following exemplifies the role of a decomposer?

Question 2 2. Energy flow is best studied at the _____ level of ecology, which includes both food chains and food webs of many producers and consumers.

Question 3 3. Which of the following examples would NOT be studied in the field of population ecology?

Question 4 4. Thomas believes that all global warming is caused by carbon emissions from factories so that if those factories are shut down, the problem will be solved. His friend Dan explains why Thomas' thinking is in error. The first thing he explains is that carbon is a natural part of our world that is _____.

Question 5 5. Carbon, originating from sediments in the Earth, plays a key role in which of the following phenomena?

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Question 6 6. With regards to an ecosystem's population density, predation is considered _____.

Question 7 7. Decomposers do ALL of the following:

Question 8 8. Hypothetically, a large scale transformation of carbon dioxide into burnable hydrocarbons would result in _____.

Question 9 9. 'Region A' and 'region B' encompass common territory. However, 'region B' is more expansive, covering several other territories that 'region A' does not. Which of the following statements is true?

Question 10 10. Sunlight represents an example of _____ energy.

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Question 11 11. A producer derives its energy from sources known as _____.

Question 12 12. Of the following examples, which one is NOT a good example of an environment that would have relatively low biodiversity?

Question 13 13. From greatest to least, the series 'rainforest > grasslands > desert' represents which of the following concepts?

Question 14 14. Which of the following statements is TRUE regarding eutrophication, which is the ecological process that occurs when excess nutrients are added to a body of water?

Question 15 15. From which of the following food chain levels can omnivores derive their energy?

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Question 16 16. The Sahara Desert, Earth's polar regions, and the depths of Earth's oceans, are environments _____ biodiversity.

Question 17 17. Food chains always begin with an organism that gets its energy from a(n) _____ energy source, such as the sun.

Question 18 18. If scientists discovered a way to harness carbon dioxide in the atmosphere and turn it into burnable hydrocarbons, this would decrease current worries about _____.

Question 19 19.

Marine coral reef , coastal ocean, deep ocean


In the example above, how would you label the expected biodiversity rankings (using low, medium and high as labels) for the areas listed?

Question 20 20. Predation, or death by predators, is a fact of life for some forest animals, while other factors, such as how much food is available, may change depending on how many animals of the same type are competing within a given area. This example illustrates the difference between:

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Question 21 21. Which of the following is an example of a study of population ecology?

Question 22 22. The concept of energy flow relates closest to which of the following concepts?

Question 23 23. Coyotes are _____, which means that they can potentially feed at any of the trophic levels in the food chain.

Question 24 24. Due to biodiversity and the sheer number of different types of plant and animal life on the earth, which of the following would be a poor research plan?

Question 25 25. Eutrophication is an ecological process whereby _____.

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Question 26 26. In the food chain, a plant, such as wild prairie grass, is a producer. Which of the following ACCURATELY describes how producers obtain energy?

Ecosystems and the Effects of Pollution Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next question. You can skip questions if you would like and come back to them later with the "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. You will lose your work if you close or refresh this page. Good luck!

Environmental Science 101: Environment and Humanity  /  Science Courses
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