ENVS

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Author:
DK3
ID:
187540
Filename:
ENVS
Updated:
2012-12-06 10:23:14
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ENVS final
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UL
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  1. A huge problem using insecticides to control insect pests is____.
    that insects quickly develop resistance to chemicals
  2. _____and______ are examples of higher plants that cause damage b/c they are hemiparasites (water parasites) or true parasites b/c they lack chlorophyll and depend on the host for all nourishment
    milstletoe/dodder
  3. ______mouthparts may be sucking, chewing, or rasping-sucking.
    Insects
  4. ____are simple, microscopic, multicellur animals. Typically containing 1000 or fewer cells. Most aren't pathogens but rather are_____.
    Nematodes/saprophytes
  5. A series of ____systems or belts of surface winds in each hemisphere determines the patterns of precipitation and vegetation.
    3
  6. The _____ _____or______ is the second largest biome on earth after the desert
    boreal forest/taiga
  7. A biome is a collection of ecosystems with similar_____.
    climates, soils, and plant composition
  8. At the equator, warm temperatures and high moisture result in_____, the most productive biome on earth
    tropical rainforest
  9. Between 40-50 degress latitude with 30+ inches of rainfall per year _____ ______ developes.
    temperate forest
  10. In a grassland _______ growth is limited by lack of water.
    tree
  11. Level land is less likely to erode from water than sloping land—but can be more vulnerable to  ________.
    wind erosion
  12. Soil, water, and fertility management are all components of_____ .
    land preparation
  13. A ______________ is sometimes used in seedbed preparation because it is effective in breaking up soil crusts, reducing clod sizes, and destroying small weeds.
    spring-tooth harrow
  14. __________ are single celled, microscopic, prokaryotic, organisms classified by cell shapes.
    Bacteria
  15. Plant _________ require a wound in order to enter the plant cells; once in, they can move freely from cell to cell via the _______.
    virus/plasmodesmata
  16. __________ controls are considered an environmental-friendly alternative to using pesticides
    Biological
  17. Weed _________ may privide information that increases our capacity to use biological mehtods to control weeds.
    ecology
  18. ______ digest dead plant and animal matter at or below the soil surface.
    Saprophytes
  19. Because of high growth rates in tropical rainforests, ________ are rapidly taken up by plants and rapidly ________ in the soil.
    nutrients/cycled
  20. _____ results when resources are not available for another species.
    exclusion
  21. At the equator, temperatures are _________ all year round and trade winds carry ________ off oceans resulting in high levels of ________.
    high/moisture/rainfall

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