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Tundra - Coggle Diagram

- - - - growing season
        in summer
- - - - presence of Permafrost prevents
        water draining away + landscape
        dominated by lakes + marshes
  - - - very thin
      - lack of humus as organic
        material decomposes very
        slowly
    - - soil organisms struggle breakdown
        dead organic material to provide
        nutrients for new growth
    - - gley soil of blue-grey
        clay in sub-soil due to
        waterlogged conditions