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What effect can environmental selection pressures have on cane toads in…

- - - - Low humidity
      - Average temp 30°C-32°C
      - Common lightning storms
      - Little to no rainfall
        
        Water is scarce
    - - High humidity
      - Heavy rainfall -average 1,565mm
      - Fertile soil
    - - Available all year round
    - - Organic matter
      - Moisture
      - Texture
      - Colour
    - - Organisms needing lower heights
      - Smaller plants with large root systems
  - - - Introduced 5000-6000 years ago
      - Hunt small animals
      - Eat road kill
      - Eat animals that have died of natural causes
    - - Wallabies feed on the edge of roads becoming victims to oncoming vehicles
- - - - Land
      - Aquatic
  - - - no competition
      - not sharing a role in the ecosystem
- - - - Snakes
        
        Adapted
        
        Head shrunk
        
        lesser gape capability
        
        Prevent from eating cane toad
        
        Longer body
      - Monitor lizards
      - At risk
        
        Fish
        
        Frogs
        
        Birds
        
        Mammals
        
        Aquatic invertebrates
        
        northern quoll
      - Animals that eat cane toads #
      - Animals that are vulnerable to bufotoxin
        
        Natural selection
        
        Removed from population
- - - - Originally nocturnal
        
        Has become diurnal #
      - Avoids sunny areas
        
        Typically stays in shade/darker spaces during day # #
    - - Longer legs
        
        Increased movement speed
        
        from previously 10km/yr to now 40-60km/yr
      - Increased size
        
        Allows to eat larger prey
  - - - Skin must remain moist
    - - More food available during the day