Geography 5 - UCLA Chapter 5/6/7

21 Questions
Environmental Science Quizzes & Trivia

Geography 5 at UCLA chapters 5,6, 7 Principles of Environmental Science

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Questions and Answers
  • 1. 
    What are the most important determinants in biome distributions?
  • 2. 
    - Mostly between N and S latitude - characterized by low moisture levels and precipitation that is infrequent and unpredictable from year to year- exhibit water conservation characteristics
    • A. 

      Grassland

    • B. 

      Desert

    • C. 

      Tundra

    • D. 

      Conifer Forests

  • 3. 
    - Primo agricultural land- deep roots - very rich soils- few trees due to inadequate rainfall- large daily and seasonal temps- fires typical/sometimes necessary to conserve nutrients
    • A. 

      Grassland

    • B. 

      Desert

    • C. 

      Tundra

    • D. 

      Conifer Forests

  • 4. 
    - Far north- short  growing season- permafrost- water locked up much of the year- low biological productivity 
    • A. 

      Desert

    • B. 

      Grasslands

    • C. 

      Tundra

    • D. 

      Conifer Forest

  • 5. 
    - cone bearing trees with needle like leaves with waxy coatings to minimize water loss (not much water) - southern pine forests- taiga
    • A. 

      Desert

    • B. 

      Grassland

    • C. 

      Tundra

    • D. 

      Conifer Forest

  • 6. 
    - occur throughout the world where rainfall is plentiful- deciduous trees shed leaves when water is scarce/ground is frozen - rich variation of tree species - forest canopy covers diverse understory 
  • 7. 
    Cover relatively little total area but biologically distinctive productive; extremely varied due to temperature, water quality, geomorphic and other differences
  • 8. 
    Thermocline?
    • A. 

      Bottom sub-community with low oxygen levels

    • B. 

      Distinctive temperature transition zone that separates warm upper layer and deeper cold layer

    • C. 

      Connects other aquatic ecosystems

  • 9. 
    Bogs and Fens
    • A. 

      Waterlogged soils that tend to accumulate peat

    • B. 

      Land surface is saturated or covered with water at least part of the year

    • C. 

      Wetlands with trees

    • D. 

      Wetlands w/out trees

  • 10. 
    Equivalent of an aquatic rainforest, accumulates calcareous skeleton of colonial organisms; HIGHLY endangered ecosystm
  • 11. 
    Eras of Extinction: Permian Period
    • A. 

      Dinosaurs and 50% of existing genera disappeared

    • B. 

      2/3 of all marine species and early half of all plant and animal families died out

    • C. 

      Fossil records suggest more than 99% of all species ever in existence are now extinct

  • 12. 
    Puts mineral back into the soil of rain forests for a year or two, not bad if there is a low population density and leave enough time for the forest to recover- most nutrients found in the frees 
  • 13. 
    -          banks, govts, and lending institutions hold nearly $1 trillion in loans to developing countries – conservation orgs buy debt obligations on the secondary market at a discount and then offer to cancel the debt if the debtor country will agree to protect or restore an area of biological importance o    Particularly focused on tropical rainforests 
  • 14. 
    Define clear cutting
    • A. 

      A small percentage of mature trees are taken in each 10-20 year rotations, can retain many characteristics of mature, old growth forests

    • B. 

      Harvesting all trees in a narrow corridor

    • C. 

      Every tree in a given area is cut regardless of size - fast/efficient but wastes small trees, increases erosion, eliminates wildlife habitat

  • 15. 
    Intensive planting of a single species, an efficient wood production approach, but one that encourages pests and disease infestations and conflicts with wildlife habitat or recreation uses - rapid growth and easier harvest- low biodiversity 
  • 16. 
    Denuding and degrading a once fertile land, initiating a desert-producing cycle that feeds on itself and causes long term changes in soil, climate, and biota of an area
  • 17. 
    Confining grazing animals in a small area for a short time to force them to eat weedy species as well as the more desirable grasses and forbes 
  • 18. 
    Most prominent form of malnourishment?
    • A. 

      Iron deficiency

    • B. 

      Starch deficiency

    • C. 

      Iodine deficiency

    • D. 

      Obesity

  • 19. 
    Soil Layers
  • 20. 
    Dramatically increased agricultural productions brought about by "miracle" strains of grain: usually requires high inputs of water, plant nutrients, and pesticides 
  • 21. 
    Contour Plowing?
    • A. 

      Planting different crops in alternating strips along land contours

    • B. 

      Plowing across slope to slow the flow of water

    • C. 

      Shaping land to create level shelves of earth to hold water and soil