Unit 8:  Ecology
I can:

• Explain how the behavioral and/or physiological response of an organism is related to changes in internal or external environment.
• Explain how the behavioral responses of organisms affect their overall fitness and may contribute to the success of the population.
  
• Describe the strategies organisms use to acquire and use energy
  
• Explain how changes in energy availability affect populations and ecosystems.
  
•  Explain how the activities of autotrophs and heterotrophs enable the flow of energy within an ecosystem.
  
• Describe factors that influence growth dynamics of populations.
  
• Explain how the density of a population affects and is determined by resource availability in the environment.
  
• Describe the structure of a community according to its species composition and diversity
  
• Explain how interactions within and among populations influence community structure.
  
• Explain how community structure is related to energy availability in the environment.
  
• Describe the relationship between ecosystem diversity and its resilience to changes in the environment. 
  
• Explain how the addition or removal of any component of an ecosystem will affect its overall short-term and longterm structure.
  
• Explain the interaction between the environment and random or preexisting variations in populations. 
  
• Explain how invasive species affect ecosystem dynamics.
  
• Describe human activities that lead to changes in ecosystem structure and/ or dynamics.
  
• Explain how geological and meteorological activity leads to changes in ecosystem structure and/or dynamics
  

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