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DSST Environmental Science Exam Practice Test 2
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Avg score: 56% Most missed: “The ozone layer is a necessary part of the atmosphere protecting Earth’s surface…”
DSST Environmental Science exam covers the basics of ecological concepts, environmental impacts and conservation. The exam contains 100 questions to be answered in 2 hours. Exam content briefly: 1. Ecological Concepts – 30% a. Ecosystems b. Organism Relationships c. Biodiversity d. Trophic relationships (e.g. food chain; food web) e. Energy flows and cycles f. Biomes g. Population biology h. Evolution i. Ecological succession 2. Environmental Impacts – 25% a. Human population dynamics b. Global climate change c. Pollution – physical, chemical, and biological aspects d.... Show more
DSST Environmental Science Exam Practice Test 2
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25 Questions

1. The first significant increase in atmospheric CO2 levels is linked to
2. Which of the following gases is thought to be a major contributor to the effect of global climate change?
3. Which of the following describes the method of contour farming?
4. Which of the following is an example of a point source of water pollution?
5. Which would be the best way to help permanently ensure environmental justice for a low-income community?
6. Mass production contributed most to which major environmental concern?
7. Which of the following is a possible difficulty of recycling plastics?
8. Which of the following describes limiting factors?
9. What is one potential consequence of unequal access to a clean environment?
10. Surface mining regulations require that land damaged from the effects of surface mining must be
11. In a temperate deciduous forest,maple trees, birds, and squirrels all live in the same given area. All three species together make up a/an
12. Which of the following is the correct order in a simple four-step food chain?
13. Organisms that obtain nutrition at all trophic levels are
14. A primary goal of the Superfund is to
15. The exploitation of minerals in oceans is controlled by the
16. Which listed feature is the defining characteristic of a desert biome?
17. What percent of the world’s electrical power comes from nonrenewable energy sources and nuclear energy?
18. Which fuel source can be produced from biomass materials that contain cellulose or starch?
19. Which of the following is NOT a source of acid deposition?
20. Which of the following statements most accurately describes the role of nitrifyingfixing bacteria in the nitrogen cycle?
21. An endangered marine fish in coastal waters is protected by which law(s)?
22. The stewardship worldview of environmentalism maintains that
23. The total fertility rate of a population is the
24. Which of the following processes provides usable energy to producers?
25. Which of the following is an international organization that plays a major role in environmental conservation?