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    • Soil core inside a CAT scanner with inset view.
    Rights: Main image: Dr Glyn FrancisInset image: AgResearch Published 12 June 2012 Size: 70 KB Referencing Hub media

    CAT scanning allows scientists to non-destructively observe earthworm burrows. The burrows stay intact so scientists can observe how they develop and change with time.

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      The role of observation in science

      Observation is something we often do instinctively. Observation helps us decide whether it’s safe to cross the road and helps to determine if cupcakes are ready to come out of the oven ...

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