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  • Adaptation
    • Selection
      • Natural selection
        • The theory was first developed by Charles Darwin
      • Sexual selection
        • The male or female is attracted by certain characteristics such as form, colour, behaviour etc, to successfully carry on their offspring
        • Is a branch of natural selection
    • Biological
      • Bipedalism, teeth size, brain size
      • Small changes over a long period of time due to severe and persistent environmental stress
      • Biologicaal adaptation: Skin colour
        • The type of melanin – pheomelanin in lighter skin people; and eumelanin in darker skin people
        • The Inuit
          • Live in Canada, Alaska, Siberia and Greenland
          • Short, stocky and with small limbs
          • Eat so much vitimin D that there blood doesn't clot, they don't have heart attacks but can die from the smallest of cuts
          • Heavy skin pigmentation despite living in Arctic areas, this is because 1000 years is not a suitable amount of time to totally loose all pigmentation
            • Also because the sun in this area is so strong becuase of the whiteness of the snow, so they do tan and burn
        • The Maasai
          • Have long thin limbs
          • Live in Kenya
          • Darker skin and less body hair due to the warm climate and strong sun
      • Biological adaptation: climate
        • The heat
          • Volume of urine is reduced
          • Salt concentration in sweat is reduced
          • Blood vessels near the top of the skin dilate or expand
          • We are more naturally adapted to the heat than the cold
        • The cold
          • More hair for isolation
          • Slower blood flow
          • Decreased heart beat
    • Cultural
      • Behavioural changes that decrease the need to biologically adapt
        • Through the use of tools, fire, safer habitats
      • Culture is based on ideology, intentions, ideas, material possessions, gender, sexuality, relationships, kingshipfdfgdf


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