What does ecology study? 1. groups of organisms 2. interactions

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CHAPTER 17/18 OUTLINES

• What does ecology study?1. groups of
  organisms2. interactions
• What are the three levels of ecology?1.
  population2. community3. ecosystem
• What is the biosphere?1. all life on Earth
• What does abiotic mean and what are some of its
  factors?1. non-living2. light, heat, soil,
  water, air
• How are ecology and evolution tightly linked?1.
  organisms and environment2. time-frame long
  versus short

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• What is population density and how do we measure
  it?1. number per unit area2. census techniques
• What are the three dispersion patterns?1.
  clumped2. uniform3. random
• What are the two types of population growth?1.
  exponential2. logistic
• What is carrying capacity? 1. maximum number
  that can be supported
• Why do some populations cycle?1. predator-prey
  interaction2. weather, food availability
• What are the three kinds of survivorship
  curves?1. Type I negative aging2. Type II
  neutral aging3. Type III positive aging