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Chapter 4 - Coggle Diagram

- - - - R-strategists
        
        maximize number of offspring produced
      - K-strategists
        
        invest more in each individual offspring
  - - - density dependence
      - density independence
    - - top down regulation (predation)
        
        Types of predation
        
        1) Predatory
        
        2) Herbivory
        
        3) Parasitic
      - bottom up regulation (resource scarcity)
    - - 1) sharp decline = threatened
      - 2) below critical number = endangered classification
      - 3) extinction = species no longer exists in the wild
- - - - discovered by Charles Darwin and Alfred Wallace
    - - 1) adapt to changing conditions
      - 2) migrate to an area with more favorable conditions
      - 3) become extinct
- - - - intraspecific (same)
      - interspecific (different)
    - - one species benefits while the other is not affected
    - - both species benefit from the relationship
    - - one species (the parasite) benefits while the other (the host) is harmed
    - - neither species is harmed or benefits from relationship