Droughts

Description

Mind Map on Droughts, created by Fraser Sanders on 23/11/2014.
Fraser Sanders
Mind Map by Fraser Sanders, updated more than 1 year ago
Fraser Sanders
Created by Fraser Sanders about 10 years ago
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Resource summary

Droughts
  1. A drought is a prolonged period with little or no rainfall. A drought becomes a hazard when people, agriculture or industry are affected
    1. How do humans make drought worse?
      1. Deforestation
        1. Means less evapotranspiration , fewer clouds , less rain and more soil erosion
        2. Overgrazing
          1. Less grass , more soil erosion
            1. Lack of water, minerals and nutrients
          2. Irrigation for crops means less water for other uses.
            1. Need soil to be in good condition so that the land is fertile.
              1. This also prevents flooding
            2. Poor water management
              1. Leaving tap on while brushing teeth
                1. Golf courses using vast quantities of water
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