Adaptation
- Created by: Joseph Timoney-Smith
- Created on: 15-04-14 09:15
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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
- 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
- The heat
- 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
- Behavioural changes that decrease the need to biologically adapt
- Selection
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