Decay

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Decay

  1. 1. Energy transfer and decay
  2. 2. Key termsFood chainsBiomassConsumerProducerPrimarySecondaryTertiaryDecayDecomposersMoistureCompost
  3. 3. Food chains show who eats who!Pyramids of biomass show the mass of the organisms at each stage of thefood chain. ABCDWhich letter(s) represent the consumer(s)?Which letter(s) represent the producer(s)?The pyramid of biomass will always be a pyramid.There will always be energy wastage between each stage in theprocess. Where does the energy go?
  4. 4. Energy is lost to the environment in:Respiration  energy for living eg movement Heat – keeping warmWaste materials – faeces and urine
  5. 5. Decay – part of the cycle of lifeOrganisms take energy from the environmentThey also give energy to the environment when they dieMicroorganisms (eg bacteria and fungus) help the decay process. Theseorganisms are called decomposters.Three things will help to speed up the decay process
  6. 6. Three conditions speed up the decay process: Warmth Moisture Oxygen
  7. 7. a
  8. 8. a
  9. 9. How are these foodspreserved?
  10. 10. Peat bog man – why so preserved?
  11. 11. Key termsFood chainsBiomassConsumerProducerPrimarySecondaryTertiaryDecayDecomposersMoistureCompost

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