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5 Written Questions

4 Matching Questions

  1. The Everglades ecosystem
    A. no longer receives water from natural sources as in the past and is drying out.
    B. contains sawgrass prairie and mangrove sloughs.
    C. has diverse bird, wildlife, and growing seasons
    D. A, B, and C are correct.
    E. B and C only are true.
  2. Penicillin is derived from a fungus and certain species of bacteria produce tetracycline and streptomycin.
    True False
  3. Nitrogen oxides from automobile exhaust and sulfur dioxides from power plants combine with atmospheric water vapor to produce a weak acids, that may result in
    A. the greenhouse effect.
    B. ozone depletion.
    C. acid rain or snow.
    D. photochemical smog.
    E. global warming.
  4. Which of the following statements about biological diversity is NOT true?
    A. Scientists estimate that 10-50 million species exist.
    B. Biodiversity is described in terms of genetic, community, and landscape diversity.
    C. Biodiversity refers to the variety of life on Earth.
    D. Biodiversity is evenly distributed throughout the biosphere.
    E. Many species that are in danger of extinction have not been identified and studied.
  1. a D. A, B, and C are correct.
  2. b True
  3. c C. acid rain or snow.
  4. d D. Biodiversity is evenly distributed throughout the biosphere.

5 Multiple Choice Questions

  1. B. source
  2. C. a natural phenomenon due to absorption of sunlight and re-radiating of the heat.
  3. D. habitat destruction.
  4. B. all animals have the same rights or legal status as humans.
  5. True

5 True/False Questions

  1. Which of the following statements about tropical rainforests is NOT true?
    A. Tropical rain forest land contains rich soil that is desirable as farmland.
    B. Cattle ranchers in South and Central America temporarily benefit from deforestation.
    C. Tropical rain forests are being destroyed by farmers using slash-and-burn agriculture.
    D. Government subsidies and roads are necessary to begin the process of deforestation on a large scale.
    E. Logging is a serious threat to tropical rain forests, as less developed countries cut down their forests for rapid economic gain.
    D. Biodiversity is evenly distributed throughout the biosphere.

          

  2. Which of the following statements about pollution is NOT true?
    A. When the ozone shield is destroyed, excess ultraviolet light reaches the Earth.
    B. Water vapor and sulfur dioxide or nitrogen oxides combine to form wet or dry acid deposits.
    C. A lake can die due to eutrophication, which is a lack of nutrients.
    D. Synthetic chemicals can mimic hormones and cause abnormal growth and behavior in wild animals.
    E. CFCs, like Freon, have chlorine atoms that breakdown the ozone shield.
    C. A lake can die due to eutrophication, which is a lack of nutrients.

          

  3. As "civilization" spread around the world, several species benefitted greatly from new human-made habitats, including the house fly, the Norwegian rat, and many crop plants. Generally, with expansion of human populations and agriculture,
    A. there has been an increase in biological diversity.
    B. biological diversity has remained the same, with human-associated organisms replacing the few natural species displaced.
    C. biological diversity has decreased but mainly with the elimination of pests by humans.
    D. biological diversity is decreasing at an accelerating rate with the elimination of many unstudied species.
    B. all animals have the same rights or legal status as humans.

          

  4. Which of the following statements about extinction is TRUE?
    A. Overexploitation by hunting and fishing is the major threat to tropical animals and plants.
    B. Without human activity, all species would survive and there would be no extinctions.
    C. Endangered wild species often become extinct due to different combinations of factors.
    D. Commercial hunting and fishing are careful not to deplete animal reserves.
    E. Introduction of new exotic species helps preserve biodiversity and slow extinction.
    C. A lake can die due to eutrophication, which is a lack of nutrients.

          

  5. When habitats are fragmented so that populations are subdivided into several small and isolated groups, they form a
    A. sink population.
    B. biodiversity hotspot.
    C. keystone species.
    D. source population.
    E. metapopulation.
    B. a habitat restoration plan.

          

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