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  • Geography Factsheet: 168 Nearest Neighbour Index

    Geography Factsheet: 168 Nearest Neighbour Index

      The Nearest Neighbour Index is a method of assessing the spatial distribution of points - in other words, how spread out they are. This Factsheet will • introduce the two types of n...

    Price £3.00more info
  • Geography Factsheet: 169 London: Contrasting Suburbs

    Geography Factsheet: 169 London: Contrasting Suburbs

      This Factsheet looks at a cross section of London's suburbs. Suburbs were once seen as the homes of London's affluent commuters. But now many of these suburbs face problems of depriv...

    Price £3.00more info
  • Geography Factsheet: 170 Temperate Deciduous Forest Biomes

    Geography Factsheet: 170 Temperate Deciduous Forest Biomes

      Woodlands are long established, complex ecosystems dominated by trees. Temperate deciduous forests are found mainly in north-west, central and eastern Europe, eastern North America and ea...

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  • Biology Factsheet: 141. Forests and Energy Cycles

    Biology Factsheet: 141. Forests and Energy Cycles

    Examiners commonly set questions which test students ability to apply  their knowledge of the C and N cycle to forest ecosystems. Examiners like  these questions because students often:&nb...

    Price £3.00more info
  • Biology Factsheet: 142. Modern Examples of Evolution in Action

    Biology Factsheet: 142. Modern Examples of Evolution in Action

    Natural selection was proposed by Darwin and by Wallace as being the mechanism by which new species arise from pre-existing species. ...

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  • Biology Factsheet: 143. Data Interpretation Questions: Vitamins

    Biology Factsheet: 143. Data Interpretation Questions: Vitamins

    Examiners often set questions on unexpected aspects of the specification.  Students often respond:   This isn’t on my specification!  But the truth is,  examiners can set q...

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  • Biology Factsheet: 144. Spearmanís Rank Correlation Coefficient

    Biology Factsheet: 144. Spearman's Rank Correlation Coefficient

    Spearman's Rank is one method of measuring the correlation between two variables. Correlation may be:  • positive (large values of one variable associated with large values of the other var...

    Price £3.00more info
  • Biology Factsheet: 145. Blood Sugar and its Control

    Biology Factsheet: 145. Blood Sugar and its Control

    The main sugar carried in blood is glucose but many other sugars, for example, fructose, galactose, lactose, ribose, arabinose and xylose may be present  in small quantities. ...

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  • Biology Factsheet: 146. Tracheids, Vessels and Sieve Tubes

    Biology Factsheet: 146. Tracheids, Vessels and Sieve Tubes

    Tracheids, vessels and sieve tubes are found in the vascular tissue of the plant.  • Tracheids and vessels are found in the xylem tissue and conduct water and dissolved mineral ions from th...

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  • Biology Factsheet: 147. Ageing

    Biology Factsheet: 147. Ageing

    An adult organism is not a static being but continues to change and develop,  until the developmental processes are brought to an end by death. The  word ‘ageing’ describes the...

    Price £3.00more info
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