2.3 Biogeochemical cycles

2.3 Biogeochemical cycles Quiz

IB Environmental Systems and Societies HL: Quiz

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  1. 1. Which gives a carbon store in the lithosphere?

    • A. Limestone
    • B. Atmospheric carbon dioxide
    • C. Dissolved carbon dioxide
    • D. Living trees

  2. 2. (HL) Methane is produced by:

    • A. Nitrifying bacteria in aerated soil
    • B. Methanogenic bacteria in anaerobic conditions
    • C. Photosynthesis
    • D. Denitrifying bacteria in the ocean

  3. 3. (HL) Denitrification happens in:

    • A. Well-aerated soil
    • B. Waterlogged anaerobic soil
    • C. The atmosphere
    • D. Plant roots

  4. 4. (HL) What is the Haber process used for?

    • A. Making ammonia for fertiliser
    • B. Burning fossil fuels
    • C. Removing methane
    • D. Making limestone

  5. 5. (HL) What has been concluded about the nitrogen planetary boundary?

    • A. It is far from being crossed
    • B. It has been crossed
    • C. It does not exist
    • D. It applies only to oceans

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