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 Ecology Test I


Bio-geochemical Cycles 
Quiz I

Problem set I

Ecology Test 
Test 1   Test 2
Test 3   Test 4
Test 5   Test 6
Test 7   Test 8
Test 9   M/C 

Energy Calculation 
Quiz 1   Quiz 2

Human Ecology  
Quiz 1   Quiz 2
Quiz 3   

Population Dynamics 
Quiz 1   Quiz 2
Quiz 3   Quiz 4
Quiz 5   Quiz 6

Questions 1 to 5 are worth 5 marks each. Questions 6 to 12 are worth 3 marks each. Don't try to dream up just 5 or just 3 points - sometimes all 5 points may only be for simply stating the single fact or relationship.
  1. We live in a biome known as a temperate deciduous forest. List four factors which are directly responsible for the this biome (and not for instance the tropical rain forest) being here. Rank the factors from most important to least important. Explain your reasoning.
  2. Draw a typical (food) pyramid of energy. Include the relative amounts of energy. 
  3. A temperate deciduous forest produces 1.20 kg biomass per m2 per year. How many kg of biomass could London region produce in one month? (London region = 40 000 m by 40 000 km). How many kJ of energy would that be "equal" to?
  4. Draw a sketch showing the nitrogen cycle. Include the names of the important processes. For each molecule, state whether the molecule is found in the soil, water, or air.
  5. Carbon dioxide emissions are increasing at a rate of 3.0% per year. When the CO2 emissions be twice as high as they are now?
  6. Define density independent growth factors. Give two examples.
  7. What is the total numbers of babies for 100 females if ZPG is desired? What two rates are being balanced?
  8. Sketch the age structure for an expansive population versus a stationary (static) population. Which would have more senior citizens? Label them on the graph.
  9. Which two revolutions brought in large population changes over the last 10,000 years?
  10. Why is cropland disappearing?
  11. Name the top five worst wasters of energy (per capita). What is the common denominator in most of them? What does per capita mean?
  12. Describe two of the methods by which acid rain kills the environment.