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community ecology (community's interactions (predation (predator kills…

- - - - two species competing for same resources
    - - biotic and abiotic resources
      - resource partioning
        
        differentiation of ecological niches
      - character displacement
        
        sympatric populations of two species
  - - - +,-
    - - camouflage makes prey difficult
    - - effective chemical defense
    - - harmless species
    - - unpalatable species
  - - - +,-
  - - - derives nourishment from another organism
      - endoparasites
        
        live within the body
      - ectoparasites
        
        external surface of the body
      - parasitoidism
        
        lays eggs in living hosts
  - - - benefits both species
    - - one benefits, other unaffected