Organising an ecosystem

• how are feeding relationships represented?

  food chain
• producer examples

  • plants
  • algae
  • photosynthetic organisms
• PRODUCER -> PRIMARY CONSUMER (herbivores) -> SECONDARY CONSUMER (carnivores) -> TERTIARY CONSUMER (large carnivores)
• producer

  • source of all biomass
  • synthesise complex molecules
• predators


  consumers that kill and eat other animals
• prey


  animal that is eaten
• in a stable community the number of predators and prey rise and fall in cycles
• • living organisms remove materials from the environment for growth
  • material is recycled to provide building blocks for future organisms
• decomposer


  microorganism breaks down dead organisms and waste
• material cycling

  decay cycle

  carbon cycle

  water cycle
• decay cycle

  
• water cycle

  
• carbon cycle