_B__ 37. The extinction of species a. is a problem limited to the tropics. b. has been sped up by the activities of people. c. is a problem only topsoil and groundwater are limited. d. is not a problem today. _C__ 38. The steps needed to solve environmental problems include a. waiting for the affected species to leave an ecosystem that is in trouble. b. leaving the problems to United Nations committees to address. c. educating the public about the problems and the costs of their solutions. d. taking any necessary action, regardless of the consequences or adverse effects. _B__ 39. Protecting ecosystem diversity is a goal of a. the revolution. c. the captive breeding program. b. conservation biology. d. the United Nations. _D__ 40. The wearing away of surface soil by water and wind is known as a. deforestation. b. desertification. c. overgrazing. d. soil erosion. _C__ 41. An endangered species is a. a diseased animal. b. a dangerous predator. c. a group of organisms near extinction. d. all organisms at the top of a food chain. Chapter 4 & 5 2010-2011 Multiple Choice each) Identify the choice that best completes the statement or answers the question.(2pts _C__ 1. Which is a biotic factor that affects the size of a population in a specific ecosystem? a. average temperature of the ecosystem b. type of soil in the ecosystem c. number and kinds of predators in the ecosystem d. concentration of oxygen in the ecosystem _C__ 2. Which two biomes have the least amount of precipitation? a. tropical rain forest and temperate grassland b. tropical savanna and tropical dry forest c. tundra and desert d. boreal forest and temperate woodland and shrubland _D__ 3. The average year-after-year conditions of temperature and precipitation in a particular region is the region’s a. weather. c. ecosystem. b. latitude. d. climate. _A__ 4. Each of the following is an abiotic factor in the environment EXCEPT a. plant life. c. rainfall. b. soil type. d. temperature. 5. Which biome is characterized by very low temperatures, little precipitation, and permafrost? _C__ a. desert c. tundra
_B__ 37. The extinction of species a. is a problem limited to the tropics. b. has been sped up by the activities of people. c. is a problem only topsoil and groundwater are limited. d. is not a problem today. _C__ 38. The steps needed to solve environmental problems include a. waiting for the affected species to leave an ecosystem that is in trouble. b. leaving the problems to United Nations committees to address. c. educating the public about the problems and the costs of their solutions. d. taking any necessary action, regardless of the consequences or adverse effects. _B__ 39. Protecting ecosystem diversity is a goal of a. the revolution. c. the captive breeding program. b. conservation biology. d. the United Nations. _D__ 40. The wearing away of surface soil by water and wind is known as a. deforestation. b. desertification. c. overgrazing. d. soil erosion. _C__ 41. An endangered species is a. a diseased animal. b. a dangerous predator. c. a group of organisms near extinction. d. all organisms at the top of a food chain. Chapter 4 & 5 2010-2011 Multiple Choice Identify the choice that best completes the statement or answers the question.(2pts each) _C__ 1. Which is a biotic factor that affects the size of a population in a specific ecosystem? a. average temperature of the ecosystem b. type of soil in the ecosystem c. number and kinds of predators in the ecosystem d. concentration of oxygen in the ecosystem _C__ 2. Which two biomes have the least amount of precipitation? a. tropical rain forest and temperate grassland b. tropical savanna and tropical dry forest c. tundra and desert d. boreal forest and temperate woodland and shrubland _D__ 3. The average year-after-year conditions of temperature and precipitation in a particular region is the region’s a. weather. c. ecosystem. b. latitude. d. climate. _A__ 4. Each of the following is an abiotic factor in the environment EXCEPT a. plant life. c. rainfall. b. soil type. d. temperature. _C__ 5. Which biome is characterized by very low temperatures, little precipitation, and permafrost? a. desert c. tundra
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