Decomposition and food production

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Across
  1. 1. This gas is needed for aerobic decomposition
  2. 3. METHANE is made in a ___________ generator
  3. 6. This can be controlled to ensure that only specific fish are caught
  4. 7. Only 10% of this is passed on to the next trophic level
  5. 9. Food __________ is having enough food to feed the population
  6. 13. If this is not high enough then decomposition will be slow (but this factor can also be too high!)
  7. 14. Animals may be fed food high in this substance in order to produce more meat
  8. 15. Intensive farmers could place this device into their barns to prevent energy loss from animals
  9. 16. Much BIOMASS is lost due to this process (releases energy)
  10. 17. Producers only use around 1% of the light energy from the sun in this process
  11. 20. Organisms that increase the surface area of dead and decaying material
  12. 21. This chemical is found in urine
  13. 22. This is restricted in intensive farming to prevent energy loss
Down
  1. 2. This syrup is given to FUSARIUM as food
  2. 4. All materials in the living world are _________ to provide building blocks for future organisms
  3. 5. This fungus is used to produce mycoprotein
  4. 8. Anaerobic decay in bacteria produces this gas
  5. 10. The removal of digestive waste from the body
  6. 11. Microorganisms (e.g. bacteria and fungi) that break organisms down
  7. 12. A limit placed on the number of fish that can be caught (or the amount of fishing ‘effort’)
  8. 14. The scientific term for water falling to earth
  9. 18. This can be produced by genetically modified bacteria and is used to treat diabetes
  10. 19. This substance is produced by gardeners when they provide optimum conditions for the decay of biological material