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science chapter 1 Burke/Sandler Test

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5 Written Questions

5 Matching Questions

  1. 7. What can cause a population to increase? Decrease?
  2. 8. What does population density measure?
  3. 14. What are two major interactions between organisms in an ecosystem?
  4. 15. Explain the relationship between a predator and prey. Explain how the each population affects the other's population.
  5. 19. Name three types of symbiosis and explain how each organism is affected.
  1. a Predator: wolf- helps control the population by eating the prey
    Prey: deer- provides food for the predator
  2. b I- birth rate and immigration can make a population increase, space
    D- limiting factors, food shortages, emigration, and natural disasters can make a population decrease
  3. c How many people live in one area
  4. d -Predation
  5. e Commensalism- one is benefited one get nothing happened to it
    Parasitism- on is harmed and the parasite is benefited
    Mutualism- both organisms are benefited

5 Multiple Choice Questions

  1. Behaviors & physical characteristics that allow organisms to survive in their environment
  2. The first species to populate an area
  3. 1. Abandoned field
    2. Tree growth begins
    3. Forest
    4. Climax community
  4. Organism-population-community-ecosystem
  5. Primary- he series of changes that occur in an area where no soil or organisms exist- takes 100's of years
    Secondary- the series of changes that occur in an area where the ecosystem ha been disturbed, but where soil and organisms still exist- takes a couple years

5 True/False Questions

  1. 12. What is an organism's niche?An organism role or job, determined by what an organism eats, how it eats, who it eats, how it reproduces, and physical conditions it requires to survive.


  2. 25. What events could lead to secondary succession?1. Abandoned field
    2. Tree growth begins
    3. Forest
    4. Climax community


  3. 18. What is symbiosis?The series of predictable changes that occur in a community over time


  4. 5. How is the ecosystem level different from the other levels?Organism-population-community-ecosystem


  5. 3. Give examples of abiotic and biotic factors.P- a tick on a dog
    C- a bird sitting on a deer
    M- a bee pollinating a flower


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