Environmental Science - StraighterLine - Exam 3 questions and answers

Habitat degradation occurs when a. the quality of habitat is reduced. b. habitat is lost and converted to a different form. c. habitat is managed to increase the population of a particular species. d. people have a negative opinion of nature. a. the quality of habitat is reduced. Which of the following factors is NOT a characteristic of a species likely to become extinct? a. low reproductive rate b. small population sizes c. small habitat area d. generalized niche d. generalized niche Which of the following is the outcome of the use of range land for grazing by domesticated animals (cattle, sheep, goats)? a. The land becomes more suitable for growing crops. b. Irrigation of the land is required. c. Changes in the vegetation because domesticated animals feed differently than native animals. d. Natural communities of plants become healthier. c. Changes in the vegetation because domesticated animals feed differently than native animals. Worldwide, the amount of forest land is, a. decreasing is North America. b. increasing in Europe. c. increasing in tropical Africa. d. decreasing in Central and South America. d. decreasing in Central and South America. Which of the following statements best describes functional diversity? a. It is the diversity of functions that organisms carry out. b. It is the diversity of species, all of which function in different ways. c. It is the diversity of branches of the tree of life. d. It is the diversity of ecosystems. a. It is the diversity of functions that organisms carry out. The effects of biodiversity in determining climate, water quality, and air quality are all examples of which category of Nature's Contributions to People? a. agricultural b. consumptive c. non-material d. material e. regulating e. regulating Dealing with current transportation problems of cities involves dealing with all of the following EXCEPT a. air pollution from automobiles. b. disrupting communities to build highways and train tracks. c. restricting highway construction to discourage automobile use. d. providing parking for automobiles. c. restricting highway construction to discourage automobile use. Early towns were usually built a. near rich farmland. b. near rivers, lakes, and oceans. c. near railway centers. d. None of these are correct. b. near rivers, lakes, and oceans. What does it mean when an area is designated as wilderness? a. The kinds of uses people make of the land is limited. b. People cannot use the land. c. Motor vehicles are only allowed for part of the year. d. The area has never been impacted by humans. a. The kinds of uses people make of the land is limited. Which of the following best matches the description? The crust and solid outer mantle of the earth. a. friable b. soil texture c. horizon d. chemical weathering e. windbreak f. soil structure g. contour farming h. weathering i. asthenosphere j. lithosphere k. loam l. parent material m. terrace n. soil profile o. humus p. mechanical weathering q. leaching j. lithosphere