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5 Written Questions

5 Matching Questions

  1. Size of a population is limited by...
  2. producers
  3. eutrophication of lakes
  4. denitrifying bacteria
  5. primary consumers
  1. a herbivores that eat producers
  2. b NO₃⁻ to N₂
  3. c convert light energy into chemical bond energy; have greatest biomass in food chain
  4. d # of births, deaths, immigration and emigration
  5. e sewage & manuer: ↑ nutrients: ↑ algae → weeds: shallow areas → ↓ photosynthetic organisms → 1) organic material ↑, depth ↓ and 2) detritivores ↑: O₂ ↓ → more fish die: O₂ ↓ →→ LAKE DISAPPEARS!

5 Multiple Choice Questions

  1. an interaction between two or more species that live together in direct contact
  2. recycle dead organic matter
  3. predation, parasitism, severe competition, end of resources, too much poisonous waste
  4. an alternative of pesticides
    1. crop rotations 2. introduce natural enemies of the pests 3. use natural plants toxins instead of sythetic ones 4. insect birth control
  5. # of individuals per unit area/volume

5 True/False Questions

  1. toxinsmodified leaves of cacti that protect against animals attacking it for water


  2. abiotic factorsnon-living things that organisms interact with


  3. r-strategistsreproduce rapidly when area is uncrowded and resources are vast


  4. tropical rain forestnear equator
    abundant rain fall
    stable temp.
    high humidity
    4% of Earth, but 20% Earth's net C fixation
    most plant/animal diversity
    tall trees with epiphytes


  5. marineaka Conifer Forest
    N regions
    has many lakes, ponds, & bogs
    very cold winters
    largest terrestrial biome
    heavy snowfall
    greater variety in animal species than tundra


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