The Andes

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  • Fold mountain case study - the Andes
    • farming
      • substinence farmers grow a variety of crops on the steep slopes
      • the use of terraces creates areas of flat land on the slopes
        • terraces also have other advantages; flat areas retain water in an area that receives little
          • also limit the downward movement of the soil in areas where the soils are very thin
      • most crops grown in the lower valleys
      • some cash crops are produced such as soybeans, rice & cotton
      • llamas used in the andes - pack animals, carrying materials for irrigation and buildings into inhospitable and inaccessible areas
      • female llamas used for meat & milk, & wool is used in clothes as well as rugs
    • mining
      • the Andes has a range of important minerals
      • more than half of Peru's exports are from mining
      • the yanacocha gold mine is the largest gold mine in the world.
        • open pit and the gold -bearing rock is loosened by daily dynamite blasts
      • nearby town of cajamarca has grown from 30,000 inhabitants (when the mine began)  to about 300,000 in 2010
        • mine brings alternative sources of jobs, but also means theres a lack of services & increased crime rate
          • the yanacocha gold mine is the largest gold mine in the world.
            • open pit and the gold -bearing rock is loosened by daily dynamite blasts
    • hydroelectric power
      • the steep slopes & narrow valleys that limit farming are an advantage for HEP
        • can be more easily dammed than wider valleys & the relief encourages the rapid flow of water needed to ensure the generation of electricity
      • the melting snow in spring increases he supply of water
      • in 2009 the El Platanal HEP power plant began to generate electricity
        • involving a huge dam across the canete river, second largest in peru
    • tourism
      • many natural attractions such as mountain peaks, volcanoes, glaciers & lakes
      • some tourist attractions show how people settled in the inhospitable areas
      • the Inca trail

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